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Engineering 




rC 

14?/ state of Cal iforn ia 



Hancock Library ot^itl^KS 
and Oceanography 




THE RESOURCES AGENCY 



D e partment of Wa ter Resources 



BULLETIN No. 161 



^5VT^ OF S0U7H.,v,v 



FLOOD! 



DECEMBER 1964 -JANUARY 1965 




HUGO FISHER 

Adm/n/s/rofor 

The Resources Agency 



JANUARY 1965 



EDMUND G. BROWN 

Governor 

State of California 



v>->«v£:MS!rYOFCALIFORNIAl 



MAR Z 1984 
WiiUAM b. WAKNt — ' 

Director 
Department of Water Resources 



state of California 
THE RESOURCES AGENCY 

Department of Wa ter Resources 



BULLETIN No, 161 

FLOOD! 

DECEMBER 1964 -JANUARY 1965 





JANUARY 1965 




HUGO FISHER 


EDMUND G. BROWN 


WILLIAM E. WARNE 


Adminisfrator 


Governor 


Director 


The Resources Agency 


State of California 


Department of Water Resources 



TC 

Hancock Library of Biology 1 ^ 
and Oceanography C'?^ 

FOREWORD 



The purpose of this report is to document and disseminate, very 
quickly, as much data as possible about the Floods of December 196^4^ - 
January I965. 

Here then, is published a great deal of preliminary information 
about the floods: The meteorological conditions and the storm itself; precip- 
itation amovmts; runoff quantities eind hydrographs; reservoir operation data; 
damage information; and pictures. 

But raw figures and graphs and charts and even pictures do not tell 
the entire story of a flood, for floods effect people. And once again during 
the Christmas season it was the people of majiy areas of Northern California 
who were challenged and tested by a capricious mother nature. "Good will to 
men" took a somewhat different form during Christmas 196^ in these areas of 
Northern California. It took such improbable forms as helicopter pilots 
flying — and dying on rescue missions, and in many places there were more 
sandbags filled than stockings, and the lights were on the levees -- not on 
the trees. That part of the flood story, the people, is beyond the scope 
of this report. 

This report is for the engineers, planners, and other technical 
people who need to know as much as they can, as quickly as they can, about 
the flood. Much of the data is of course preliminary and will be revised, 
where necessary, when this information is published at a later date in the 
annual Bulletin 69-65 - California High Water. 

Much of the data for this report was furnished by the many public 
and private agencies involved with hydrological activities and flood opera- 
tions. Their cooperation is gratefully acknowledged. 

iii 



TABLE OF CONTENTS 

Page 

FOREWORD ili 

ORGANIZATION, DEPARTMENT OF WATER RESOURCES xiil 

THE FLOODS OF DECEMBER 1964 - JAHUARY I965 

INTRODUCTION 1 

METEOROLOGY OF THE FLOODS OF DECEMBER 196^^ - 

JANUARY 1965 3 

December l8-2J , 196k -- The Warm Phase 3 

January 2-7, I965 -- The Second Phase 9 

RUNOFF 11 

North Coast Area 11 

Smith River Basin 12 

Klamath River Basin 13 

Trinity Subbasin 15 

Redwood Creek Basin 19 

Mad River Basin 22 

Mattole River Basin 24 

Eel River Basin • 24 

Russian River Basin 29 

Runoff Volume - North Coast 31 

Central Valley Area 33 

FLOOD AREAS AND FLOOD DAMAGE 37 

North Coast Area 37 

Central Valley Area 44 

Flooded Areas 44 



TABLE OF CONTENTS (Continued) 

Page 

Flood Damages U5 

Sacramento Basin k6 

San Joaquin Basin kj 

TABLES 

Table 

No. Page 

1 PRECIPITATION COMPARISONS - SIERRA NEVADA 7 

2 REPRESENTATIVE RAINFALL TOTALS FOR THE DECEMBER 

STORM - SMITH RIVER BASIN 12 

3 SELECTED PEAK RUNOFF EVENTS - SMITH RIVER BASIN 13 

k PEAK STAGE DATA FOR THE KLAMATH RIVER 15 

5 REPRESENTATIVE RAINFALL TOTALS FOR THE DECEMBER 

STORM - KLAMATH RIVER BASIN 17 

6 REPRESENTATIVE RAINFALL TOTALS FOR THE DECEMBER 

STORM - TRINITY RIVER BASIN 17 

7 SELECTED PEAK RUNOFF EVENTS - REIWOOD 

CREEK BASIN 21 

8 TIME TO PEAK FROM END OF PEAK RAINFALL 21 

9 SELECTED PEAK RUNOFF EVENTS - MAD RIVER BASIN 23 

10 REPRESENTATIVE RAINFALL TOTALS FOR THE DECEMBER 

STORM - MAD RIVER BASIN 2^^ 

11 SELECTED PEAK RUNOFF EVENTS - EEL RIVER BASIN 26 

12 REPRESENTATIVE RAINFALL TOTALS FOR THE DECEMBER 

STORM - EEL RIVER BASIN 28 

13 SELECTED PEAK RUNOFF EVENTS - RUSSIAN RIVER 30 



vi 



TABLE OF CONTENTS (Continued) 



TABLES (Continued) 

Table 
No. Page 

Ik REPRESENTATIVE RAINFALL TOTALS FOR THE DECEMBER 

STORM - RUSSIAN RIVER BASIN 31 

15 ESTIMATED STORM RUNOFF VOLUMES FOR THE DECEMBER 

FLOODS OF 1955 AND 1964 32 

16 SACRAME3IT0 RIVER FLOOD CONTROL PROJECT WEIR 

OVERFLOW DATA 35 

17 FLOOD DAMAGE ESTIMATE (In Dollars) 38 

18 ESTIMATE OF HOMES, FARM DWELLINGS AND TRAILER HOMES 
DESTROYED OR DAMAGED (In Dollars) kO 

19 ESTIMATE OF DAMAGE (in Dollars) ''H 

20 FLOOD DAMAGE ESTIMATE (In Dollars) k2 

21 RED CROSS RECORDS - JANUARY k, I965 kk 



APPENDIX 

APPENDIX A - RUNOFF 

TABLE A-1 PEAK FLOWS AND STAGES . 



Page 



A-1 



North Coastal Area 
Central Valley Area 

TABLE A- 2 RESERVOIR OPERATIONS . 



A-6 



vii 



TABLE OF CCWTENTS (Continued) 



PLATES 



SCHEMATIC DIAGRAM OF WEATHER PATTERN Plate 1 

METEOROLOGICAL DATA - PRESSURE GRADIENT AND WIND Plate 2 

METEOROLOGICAL DATA - TEMPERATURE Plate 3 

ACCUMULATIVE PRECIPITATION CURVES - NORTH COASTAL AREA, 

DECEMBER 196^^ Plate h 

ACCUMULATIVE PRECIPITATION CURVES - SIERRA NEVADA AREA, 

DECEMBER 196^+ Plate 5 

ACCUMULATIVE PRECIPITATION CURVES - SIERRA NEVADA AREA, 

JANUARY 1965 Plate 6 

ISOHYETAL MAP - NORTH COASTAL AREA, DECEMBER l8-27, I96U . . . Plate 7 

ISOHYETAL MAP - NORTH COASTAL AREA, DECEMBER 21-22, 1964 . . . Plate 8 

ISOHYETAL MAP - CENTRAL VALLEY AREA, DECEMBER 18-27, 1964 . • Plate 9 

ISOHYETAL MAP - CENTRAL VALLEY AREA, JANUARY 2-7, 1965 .... Plate 10 

HYDROGRAPHS OF SMITH RIVER AMD REIWOOD CREEK Plate 11 

HYDROGRAPHS OF MAD AND TRINITY RIVERS Plate 12 

HYDROGRAPHS OF EEL RIVER Plate 13 

OPERATION OF LAKE MENDOCINO RESERVOIR AND HYDROGRAPH OF 

RUSSIAN RIVER Plate ik 

OPERATION OF SHASTA RESERVOIR AND HYDROGRAPH OF 

SACRAMENTO RIVER Plate 15 

OROVILLE DAM EMBANKMENT, FEATHER RIVER, AND OPERATION 

OF BLACK BUTTE RESERVOIR, STONY CREEK Plate I6 

HYDROGRAPHS OF BUTTE CREEK AND YUBA RIVER Plate 17 

OPERATION OF FOISOM RESERVOIR, AMERICAN RIVER, AND 

HYDROGRAPHS OF FLOW PAST LATITUDE OF SACRAMENTO Plate I8 

HYDROGRAPHS OF COSUMNES AND SAN JOAQUIN RIVERS Plate I9 



vill 



TABLE OF CONTENTS (Continued) 



PLATES (Continued) 

OPERATION OF PARDEE AND CAMANCHE RESERVOIRS, 

MOKELDMNE RIVER Plate 20 

OPERATION OF LAKE McCLURE RESERVOIR AND HYDROGRAPH 

OF MERCED RIVER Plate 21 

OPERATION OF DON PEDRO RESERVOIR AND HYDROGRAPH OF 

TUOLUMNE RIVER Plate 22 

OPERATION OF MELONES AND TULLOCH RESERVOIRS, 

STANISLAUS RIVER Plate 23 

HYDROGRAPH OF STANISLAUS RIVER AND OPERATION OF NEW 

HOGAN RESERVOIR, CALAVERAS RIVER Plate 2k 

GAGE HEI(2ITS OF SACRAMENTO RIVER AND YOLO BYPASS Plate 25 

GAGE HEIGHTS OF FEATHER RIVER, YUBA RIVER, AND 

CACHE CREEK Plate 26 

GAGE HEIGHTS OF SAN JOAQUIN RIVER Plate 2? 

PRECIPITATION AND STREAM GAGING STATIONS - NORTH 

COASTAL AREA Plate 28 

MAJOR DISASTER AREAS Plate 29 

MAJOR DRAINAGE AREAS IN CALIFORNIA Plate 30 



PHOTOGRAPHS 



Cover: 



December 2k, I96U - AERIAL VIEW OF OROVILLE DAM EMBANKMENT AND 
IMPOUNDED FLOOD WATERS OF FEATHER RIVER. NOTE DEBRIS BEHIND 
LOG BOOM AND VORTEX FORMED BY WATER FUHNELING INTO SUBMERGED 
DIVERSION TUNNELS. (DWR Photo) 



IX 



.[ABLE OF CONTENTS (Continued) 



PHOTOGRAPHS (Continued) 



Frontispiece: 

December 2k 196^^ - AERIAL VIEW OF OROVILLE DAM EMBAMKMENT SHOWING 
FEATHER RIVER FLOOD WATERS DISCHARGING THROUGH DIVERSION TUNNELS 
BELOW LEFT ABUTMENT OF HANSEL'S BRIDGE. NOTE CONSTRUCTION 
FACILITIES, IMPOUNDED FLOOD WATERS, DEBRIS, VORTEX AND MIDDLE 
FORK BRIDGE UNDER CONSTRUCTION AT LEFT BACKGROUND. (EWR Photo) 

Following Page 10: 

December 25. 1964 - U. S. 101 HIGHWAY THROUGH KLAMATH. THE KLAMATH 
SlJvELOPEb THIS COMMUNITY TO A DEPTH OF 15 FEET AT THE HEIGHT 
OF THE FLOOD: 9&io OF THE TOWN WAS DESTROYED. (Photograph Courtesy 
of Eureka Newspapers Inc.) 

December 23, I96U - AERIAL VIEW OF HOLMES FLAT ALONG THE SURGING 
EEL RIVER. (Photograph Courtesy Eureka Newspapers Inc. - Neil K. 
Hiabert) 

December 23, 196k - THE JOHN NUNES HOME AT GRIZZLY BUJFFS ENGULFED 
IN THE RAMPAGING FLOOD WATERS OF THE EEL RIVER. THE TEN MEMBER 
FAMILY WAS TRAPPED IN THE ATTIC FOR TWO AND A HALF DAYS BEFORE 
RESCUE THE TWO MEMBERS SHOWN CLIMBED OUT ON TOP OF THE HOUSE 
AFTER CUTTING A HOLE THROUGH THE ROOF. (Photograph Courtesy of 
Eureka Newspapers Inc. - Neil K. Hiilbert) 

December 23 196if - EEL RIVER DELTA AND FLOODED AGRICULTURAL LANDS 
S ™AiE. NOTE VEHICLES PARKED ON ONLY HIGH GROUND IN FRONT 
OF OLD FERNDALE CREAMERY. (Photograph Courtesy of Eureka 
Newspapers Inc. - Neil K. Hulbert) 

December 2k I96U - DEVASTED TOWN OF WEOTT AUMG SOUTH FORK EEL 
RIVER. U. S, 101 HIGHWAY IN BACKGROUND. (Photograph Courtesy 
of E\ireka Newspapers Inc. - Neil K. Hulbert) 

Following Page 36: 

December 2k, 196k - AERIAL VIEW OF BIEWELL BAR ABOVE DEBRIS- 
CHOKED CONFLQENCE OF MIDDLE AND NORTH FORKS OF FEATHER RIVER. 
BACKWATER CREATED BY OROVILLE DAM EMBANKMENT EXTENDED UPSTREAM 
TO MIDDLE R)RK BRIDGE UNDER CONSTRUCTION. (DWR Photo) 



TABLE OF CONTENTS (Continued) 



PHOTOGRAPHS (Continued) 

Following Page (Continued) : 

December 23, 196k - FEATHER RIVER AT OROVILLE DAM EMBANKMENT. 
LOOKING UPSTREAM AT FLOOD WATERS ISSUING FROM DIVERSION 
TUNNELS BELOW HANSEL'S BRIDGE AND EMBANKMENT. (IWR Photo) 

December 23, 196k - AERIAL VIEW OF PARTIALLY COMPLETED 
THERMALITO DIVERSION DAM ON FEATHER RIVER BELOW OROVILLE DAM 
EMBANKMENT. NOTE CONSTRUCTION FACILITIES AND CONTRACTOR'S 
HAUL RAILROAD. (DMR Photo) 

December 2k, I96U - AERIAL VIEW OF BORROW AREA ALONG FEATHER 
RIVER BELOW OROVILLE AND OROVILLE DAM EMBANKMENT. HISTORIC 
DREDGER TAILINGS AT RIGHT CENTER OF PICTURE PARTIALLY INUNDATED 
BY FLOOD WATERS. (DWR Photo) 

December 23, 196^1 - AERIAL VIEW OF FEATHER RIVER AT OROVILLE 
LOOKING DOWNSTREAM. HIGHWAY 40A AT LEFT BANK; CONTRACTOR'S HAUL 
RAILROAD IN CENTER. NOTE PARTIALLY INUNDATED TRACKS IN BACK- 
GROUND. (DWR Photo) 

December 25, 196^^ - BRIDGE AND FLOODED ORCHARDS — FEATHER RIVER 
NEAR BORROW AREA. (DWR Photo) 

December 2k, 196k - AERIAL VIEW OF MARYSVILLE LOOKING SOUTHWEST. 
(DWR Photo) 

December 25, 196^^ - SACRAMENTO RIVER AT SACRAMENTO WEIR NEAR 
SACRAMENTO. (DWR Photo) 

December 23, 196^^ - AERIAL VIEW OF TOWER BRIDGE AT SACRAMENTO 
RIVER AT SACRAMENTO. (EWR Photo) 

December 2k, 196k - AMERICAN RIVER AT FOLSOM BRIDGE WITH FOLSOM 
DAM AND RESERVOIR IN BACKGROUND. (DWR Photo) 

December 27, 1964 - BANK SLOUGHING ENDANGERING HOMES BUILT ON 
FLOOD PLAIN OF AMERICAN RIVER IN VICINITY OF CARMICHAEL. 
(DWR Photo) 



XI 



TABLE OF CONTENTS (Continued) 



PHOTOGRAPHS (Continued) 

Following Page 36 (Continued) : 

December 2k, 1964 - AMERICAN RIVER AT SACRAMENTO ABOVE "H" STREET 
BRIDGE. (DWR Photo) 

December 28, 196^1 - EMERGENCY REPAIRS BEING MADE TO LEFT BANK OF 
AMERICAN RIVER BELOW "H" STREET BRIDGE. SACRAMENTO STATE COLLEGE 
IN BACKGROUND. (IWR Photo) 

December 2k, 196k - AERIAL VIEW OF SEWAGE TREATMENT PLANT ALONG 
AMERICAN RIVER NEAE CARMICHAEL. (IWR Photo) 

Following Page kQ: 

December 2k, ISSk - FLOODED FARM IN YOLO BYPASS. (IWR Photo) 

December 21 , I96U - AERIAL VIEW OF TWITCHELL ISLAND FLOOD FIGHT IN 
SACRAMENTO-SAN JOAQUIN DELTA. DREDGE ASSISTED FLOOD FIGHT CREWS 
IN COMBATING DAMAGE CAUSED BY HIGH TIDES, HIGH DELTA INFLOW, AND 
WAVE WASH. (EWR Photo) 

December 2?, I96J+ - VIEW OF TWITCHELL ISLAND FLOOD FIGHT IN 
SACRAMENTO-SAN JOAQUIN DELTA. CONSERVATION CREW INMATES DIRECTED 
BY DWR ENGINEERS SAVED THE ISLAND FROM INUNDATION. (DWR Photo) 

December 27, 19Sk - PHOTO ILLUSTRATING EFFECT OF TREES BEING 
PERMITTED TO ENCROACH ON RIVER SIDE OF LEVEE SLOPE. THESE TREES 
INITIATE EDDYING ACTION SUBSEQUENTLY CAUSING TREES TO TOPPLE AND 
PULL OUT LARGE SECTIONS OF THE LEVEE WITH THEIR ROOT SYSTEM. 
(DWR Photo) 

December 2k, 1964 - FLOOD FIGHT CREWS PLACING CANVAS WAVE WASH 
PANELS ON YOLO BYPASS LEVEES DURING THE NIGHT IN THE VICINITY 
OF SACRAMENTO BYPASS. (iWR Photo) 



xii 



STATE OF CALIFORNIA 
THE RESOURCES AGENCY 
DEPARTMENT OF WATER RESOURCES 



EDMDND G. BROWN, Governor 
HUGO FISHER, Administrator, The Resources Agency 

WILLIAM E. WARNE, Director, Department of Water Resources 



ALFRED R. GOIZE' Chief Engineer 



DIVISION OF OPERATIONS 

ROBIN R. REYNOLDS Division Engineer 

WILLIAM L. HORN Chief, Water Operations Branch 



This report was prepared under the 
immediate supervision of 

ROBERT W. MILLER Chief, Flood. Operations and Forecasts Unit 



by 

WILLIAM A. ARVOLA Meteorologist III 

JOSEPH B. POWERS Meteorologist III 

A. J, BROWN Senior Engineer Water Resources 

CHARLES H. HOWARD Associate Engineer Water Resources 

RODERICK L. HALL Associate Engineer Water Resources 

WARREN J. AMSTUTZ Associate Engineer Water Resources 

KENNETH LLOYD Water Resources Engineering Associate 

C. A. DETTLOFF Water Resources Engineering Associate 

DONALD K. BAKER Assistant Civil Engineer 

DAVID L. HAMILTON Assistant Civil Engineer 

FRED J. GIENTKE Assistant Engineering Specialist 

WILLIAM C. HUGHES Assistant Engineering Specialist 

A. L. RAIMUNDO Water Resources Technician II 

JOHN RIDDLE Junior Civil Engineer 

C. E. FITZGERALD Junior Civil Engineer 

J. C. BRINGHAM Water Resources Technician I 

RICHARD McGUIRE Engineering Aid II 

C. A. HARBEY Intermediate Stenographer 

with drafting by 

JOHN L. JAMES, SR Supervisor of Drafting Services 



xiii 



THE FLOODS OF DECEMBER 1964 - JANUARY I965 
INTRODUCTION 

FloodJ With quickening pace the rivulets of water stream down 
the slopes of the mountains of the Coast Reinge and Sierra to swell into 
wild angry rivers. Combining forces, these raging torrents surge throxigh 
the foothill areas and sweep relentlessly into the vulnerable valleys below. 

This scene has been repeated many times in California since the 
legendary flood of I86I-62. Each time the dark, swirling waters find more 
works of man built to slow and control them. But in California, man is not 
yet to that inevitable point in time when he is master of the flood 
situation, and he is particularly defenseless in the North Coast. 

Nature once again chose Christmas to prove how vulnerable the 
North Coast area is -- and she made her point. "A major American disaster" 
said Governor Brown viewing the North Coast devastation. Further inland, 
the Sacramento Valley, too, was subjected to rainfall that seemed intermi- 
nable emd runoff quantities that staggered the imsLgination. But here, in 
the Sacramento Valley, man had made his mark; with dams and reservoirs, 
channels, bypasses, and levees. Man won in the inland fight — if anyone 
wins in a flood. At least man didn't lose. 

There were a number of similarities between the floods of 196^)- 
and 1955. The weather patterns had shown evidence several times during 
the fall of 196^*- of developing into a 1955 storm situation. Once again, 
on the weekend of December 19-20, meteorological events began etching a 
pictiire of impending trouble. A combination of factors; a warm mass of 



moist Pacific air, a flow of cold air from an Alaskan high, a low pressure 
trough off the coast, and a strong westerly flow completed the meteorolog- 
iceil picture to provide aJjaost optimum conditions for heavy precipitation. 
This was the weather pattern on December 21, 1964 — and in December 1955. 

The potential of the meteorological situation was realized. The 
North Coast received very heavy rainfall accompanied by strong gusty winds. 
As the storm moved inland, precipitation was centered primarily in the 
basins of the Feather, Yuba, and American Rivers. The heaviest rains 
occurred on December 22 and 23, however, the nine-day totals (December 
19-27) were also quite impressive. 

Resultant runoff from the streams of the Coast Range, almost with- 
out exception, produced peak stages and peak flows that exceeded previous 
records. Runoff from the Sierra, in the Feather, Yuba, and American 
Rivers surpassed all previous records. In the remaining watersheds of 
the Sacramento Valley, peak stages and flows tended to about equal those 
experienced in 1955. In the northern San Joaquin Valley, runoff from 
streams of the Sierra was high but not of record-breaking proportions. 
The second storm, of early January, was centered further south than the 
Christmas storm and produced flows in northern San Joaquin streams that 
were generally higher. 

This flood report provides in subsequent pages a compilation in 
more detail of the facts and figures of the December 1964 - January I965 
flood. The period covered is from December I9, 1964 to January 15, I965. 
The information is presented in various forms — tables, graphs, plates 
and written description. It is a provisional technical record, subject to 
change later as all basic data is collected and analyzed more thoroughly. 



METEOROLOGY OF THE FLOODS OF DECEMBER 196k - JMUARY I963 

Decemljer 18-27, 196^ -- The Warm Phase 

The memories of the notorious flood of December 1955 had scarcely 
dimmed with the residents of the North Coast area when another flood, even 
more destructive, hit this portion of the state nine years later. The flood 
of December I96U - January I965 has much similarity to the earlier flood 
with respect to the meteorological features; ironically, the peak flows on 
many of the streams occurred on the same date as in the earlier flood. 

The broad- scale pressure pattern at the onset of the flood- 
producing rains was an elongated area of low pressure across the Pacific 
Ocean, extending from the coast of British Columbia southwestward and 
westward into the latitude band 30° -^"N across the international date 
line. To the south of this elongated west- to-east low, the westerly winds 
were increasing on December 20 and carrying a series of frontal systems 
eastward toward the Washington-Oregon coast. This progression of events 
hastened the transport of warm, moist air from the southerly latitudes of 
the Pacific toward the coast. Here strong winds inipinging on the coastal 
and inleind mountain barriers were to bring optimxim orographic lifting 
and release heavy precipitation from the cloud masses. 

Another characteristic of the flow pattern was an area of high 
press\ire over Alaska. The effect of this pressure feature was most clearly 
observed at the upper levels of the atmosphere, where the injection of cold 
polar air southward across the Gulf of Alaska was forced to flow into juxta- 
position with the warm air current emanating from the southerly latitudes. 



-3- 



This strong contrast between cold and warm air masses brought into conflu- 
ence served to strengthen the westerly wind flow and maintain an energy- 
explosive frontal boundary straddled across the Oregon coast. 

On Plate 1 is shown a schematic flow chart at the 500 millibar 
pressure surface (about 18,000 feet above sea level) depicting the general 
air flow of the troposphere during the pre-Christmas period when the rains 
fell most intensely over Northern California. This flow pattern bears a 
close resemblance to that in December 1955. The belt of maximum winds in 
the 196^ storm was a little further north than in the 1955 pattern, but in 
both years the origin of the problem was the sustained flow of moist, tropi- 
cal air over California. 

In the following paragraphs the synoptic events are described in 
more detail with additional charts to illustrate this meteorological event. 

On the weekend of December 19 and 20, I96U, a semi stationary low 
was centered off the British Columbia coast. This low was narrowly sepa- 
rated from a more extended area of low pressure in the central Pacific by 
a ridge of high pressure extending southeastward from the Aleutian Islands. 
A weak southwest flow of moderately moist air over California was bringing 
some light precipitation to Northern sind Central California. The snow 
level* of the precipitation in the central Sierra (American River Basin) 
was about 6,000 feet. Late on Sunday, December 20, the protective ridge 
collapsed and a migratory low pressure center headed towards the Oregon 
coast. This development was to set the stage for the next five days when 



*Snow level here is defined as the level where the precipitation form 
changes from rain to snow. 



a strengthened southwest current was to bring a warm, moist air mass to 
batter the northern half of the state. On the following days a series of 
migratory low pressure centers moved eastward from the vast mid-Pacific 
spawning area toward the Pacific Northwest, but the frontal system sepa- 
rating the cold and warm air masses did not penetrate southward into 
California, except briefly, until Christmas Day. To the south of this 
front the pressure gradient directed from south to north remained strong. 
This pressure differential, which is normal to the wind flow, is shown on 
Plate 2 where the time graph of the pressure difference between San 
Francisco and Areata has been plotted along with the Oakland and Medford 
850 millibar wind speeds (about 5,000 feet). On the upper part of the 
plate is shown the 6 hourly rainfall distribution at Ukiah (this station 
lies somewhat to the south of the heavy rainfall area in the Eel River 
Basin) . This plot illustrates the sustained strong flow which prevailed 
for a three-day period over the North Coast, as well as the inland areas. 

The heavy rains were accompamied by strong, gusty surface winds. 
Rainfall reports from many stations in open exposures, especially in the 
North Coast area, indicate that the catch was deficient due to the tvirbulent 
winds. The airport at Areata reported gusts of kO to 50 mph. Other 
stations reported gusts of similar magnitude. 

The warmth of the tropical air mass is illustrated by the time 
plot of the air temperature at two mountain stations. Sexton Stumnit in 
southern Oregon (elevation 3>84l feet) and Blue Canyon in the Sierra Nevada 
(elevation 5,280 feet). This is shown on Plate 3» The snow level at the 
warmest period was about 9,500 feet in southern Oregon and 10,500 feet at 



-5- 



the latitude of the Central Sierra. Significant also is that the high snow 
level remained for a period of several days. 

Before the onset of the warm rainstorm, there was a snowpack of 
2- to 3-foot depth in the moxintains with the snow line near the 5^000-foot 
level. Warm temperatures accompanied the heavy rain on December 21 and 22, 
and measurements taken in the snowpack at a number of points in the Sierra 
following the stonn indicated that the shallow, lower elevation snow melted 
and ran off as would be expected. However, at the higher elevations (above 
about 6,000 feet), the existing snowpack intercepted and retained much of 
the rainfall. As a result, and contrary to popular belief, the net contri- 
bution to the rain-fed runoff was probably negligible. 

The heavy rains occurred primarily on the two days, December 21 
and 22. Mass or accumulative rainfall cvirves for a number of stations are 
shown on Plates h aind 5 • The curves for the stations in the North Coast 
area, Ukiah, Willits -Howard, Redwood Creek (O'Kane)*, are based on either 
6 hourly or variable-time increment data, but these curves serve to illus- 
trate the time distribution of the rainfall. For the Sierra basins, mass 
rainfall curves for Brush Creek in the Feather River Basin, Camptonville in 
the Yuba Basin, and Blue Canyon in the American River Basin are shown on 
Plate 5 • The data for Brush Creek and Camptonville have been obtained from 
the Department's radio rain gages; data for Blue Canyon, available only 
through December 31^ was taJcen from the published "Local Climatological 
Data" by the U. S. Weather Bureau. The table below shows one-day, two-day. 



^Station located near where Highway 299 crosses Redwood Creek. 



and three-day precipitation totals for selected Sierra stations for this 
storm compared to previous record storms. 

TABLE 1 
PRECIPITATION COMPARISONS - SIERRA NEVADA 



Station 


Dec. 1955 


Oct. 1962 


Jan. -Feb. 
1963 


Dec. I96U 






One- Day 






Brush Creek 


8.68 


n.ko 


4.99 


9.U 


Caraptonville 


8.85 


6.94 


5.91 


8.83 


Blue Canyon 


l.hk 


7.37 
Two -Day 


8.70 


9.33 


Brush Creek 


11.93 


18.75 


9.78 


14.56 


Caraptonville 


13.18 


13.32 


9.98 


16.03 


Blue Canyon 


13.36 


13.81 
Three-Day 


13.96 


15.24 


Brush Creek 


13.64 


23.70 


12.55 


18.76 


Canrptonville 


16.38 


18.1^7 


12.07 


20.03 


Blue Canyon 


18.55 


19.55 


16.01 


19.79 



On December 23^ the weather maps indicated a general relsixing of 
the southwest flow of moist air. This occurred when the frontal boundary 
in the Pacific shifted far enough south to cut off the previously extended 
fetch of southwest winds blowing from the warm oceanic region of the 
Hawaiian Islands. Some precipitation still continued to fall through the 
Christmas holiday, but not with the intensity of the 2-day period 
December 21-22. 



-7- 



On December 26, a migratory low moving eastward on the frontal 
bovtndary into Washington succeeded in pushing the cold front southward 
across California, with the front passing the North Coast area in the early 
afternoon hours on December 26 and the lower Sacramento Valley late that 
evening. The passage of this front ended the warm phase of the storm. 

The cold air pouring southward out of Alaska in the wake of the 
cold front established a pronounced trough of low pressure, both at the 
surface (sea level) and aloft, just off the west coast. The snow level in 
the North Coast area lowered to 1,500 feet and in the Central Sierra (east 
of Sacramento) to 3^000 feet. While the cold air feeding into this trough 
was unstable and generated numerous showers, including hail, the saving 
featiu-e was that much of the precipitation falling on the already saturated 
watersheds came as snow. 

During the post-frontal cold phase of the storm, snow fell in the 
mountains accompanied by strong winds, bringing blizzard-like conditions. 
This seriously impeded highway travel on the trans-Sierra routes and in the 
mountain regions of northwestern California where rescue operations were 
being carried out to aid flood- stricken inhabitants. 

For the isohyetal maps, a map was prepared covering separately 
the warm phase of the storm, i.e., from the morning of December l8 to the 
morning of December 27, the latter date being the day the cold front moved 
through the state. For the North Coast area this is shown on Plate 7 , and 
for the Central Valley drainage on Plate 9 • In addition, for the North 
Coast area, Plate 8 shows the isohyetal map for the 24-hour period ending 
at OBOO, December 22, 1964; this points out the heavy rain which fell on 
this area during the severest part of the storm. 



-8- 



Several stations in the south fork drainage of the Eel River 
reported quite large amounts: for the 24-hour period ending at O8OO, 
December 22., Richardson Grove had 11. 30 inches; Willits-Howard 8.67 inches; 
Garberville 8.29 inches; and Standish-Hickey State Park 10.57 inches. 

For the 9-day period, December 18-27, the zones of maximum 
amounts included 30 inches in the Eel River Basin, and 25 inches in the 
Redwood Creek Basin and the lower Klamath River Basin. Maximum amounts in 
the Russian River Basin were 20 inches; Cache Creek Basin 5 inches; and in 
the Feather, Yuba, and American River Basins 35 inches. 

January 2-7, 1965 -- The Second Phase 

The cold trough of low pressure which developed off the coast on 
December 27 continued to maintain itself for the following 10 days. With 
this semistationary circulation pattern, northerly storm systems moving 
through the Gulf of Alaska were swept southward into this large scale 
trough. One frontal system, which was not significantly active weatherwise 
when it entered the trough on January 2, began to intensify at longitude 
130'W and brought a new 5-day precipitation siege to the northern and 
central part of California. While this storm raised the snow level in the 
North Coast area from 1,500 to 3^500 feet and in the Sierra Nevada from 
3,000 to 5^500 feet, this storm did not have the extreme warmth of the 
December storm. Nevertheless, rainfall below the snow level was intense 
enough to bring new crests to most streams of the Sacramento drainage. 
Most of the rain fell in the 5-day period ending at O8OO, January 7, with 
10 inches in the Feather-Yuba Basins, and 9 inches in the American River 
Basin. This rainfall extended southward into the Sierra basins of the San 



Joaquin Valley. The rainfall was svif fie lent to bring substantial runoff for 
the basins from the Mokelumne River south to the Chowchilla and Fresno 
Rivers. Rainfall amounts in these basins varied from 5 to 6 inches. 

Mass rainfall curves for the two stations. Brush Creek in the 
Feather River Basin and Canrptonville in the Yuba River Basin, are shown on 
Plate 6 . The snow level in the Feather River Basin on January 3 was below 
the elevation of Brush Creek (3>560 feet), but rose to above the station 
elevation on January ^i-. The steepness of the mass rainfall curve around 
noon on January k was partly caused by the melting of snow which accumulated 
in the collecting funnel of the rain gage. 

Above the snow level, accumulations to the snowpack amounted to 
4 to 5 feet. Norden, at elevation 6,900 feet, which reported a snowpack of 
86 inches on December 30, had l40 inches by January k. 

An isohyetal map for the Central Valley drainage covering the 5- 
day period from 0800, January 2 to 0800, January 7, 1965^ is shown on 
Plate 10. 



-10- 




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RUNOFF 

North Coast Area 

The recent floods on the Smithy Klamath, and Eel Rivers exceeded 
all previous floods of record -- possibly even the \inrecorded floods of 
1861-62. The record-breaking flows in the Smith, Klamath, and Eel River 
Basins were generated by the 24-hour intense burst of rainfall that started 
on the late afternoon of December 21 — ajad which followed the earlier, but 
less intense, precipitation. Although heavy flooding occurred along portions 
of the Russian and Mad Rivers, newly constructed dams (since 1955) tempo- 
rarily retained upstream runoff and subsequently alleviated downstream peaks. 
On Redwood Creek, the town of Orick witnessed the passage of a crest within 
a foot of the I955 peak. 

The waves of devastation annihilated 26 important U. S. Geological 
Survey stream gages in the North Coast. Only on the Russian and the little 
Mattole Rivers are there composite records from which an exact analysis of 
the flood can be made. Consequently much of the data on the character of 
the rise was pieced together from scattered but valuable observations taken 
by residents throughout the North Coast. 

The text which follows covering North Coast runoff is somewhat 
detailed and lengthy. However, this coverage in detail seems quite well 
justified considering the great significance of this flood and considering 
that previous floods in this area have not been too well documented. 

At this time, the analysis of the flood can only be provisional. 
With the information available, this treatment will attempt to recreate, 
where possible, certain phases of the hydrological mechanism responsible 
for propagating the North Coast flood of December 1964. 

-11- 



Smith River Basin 

Heavy precipitation during the latter half of December l^Sk propa- 
gated record flows in the 6l3 square mile Smith River Basin. Located in the 
extreme northwest comer of the state, recorded precipitation for the 
December storm ranged from 9*21 inches on the coast at Crescent City to 
26.59 inches at Gasquet Rajiger Station, 12 miles inland along the Middle 
Fork of the Smith River. 

According to residents in the area, the Smith River near Crescent 
City apparently peaked during the morning of December 22 and held steady 
throughout the day at a level just under the 1955 peak stage. A sudden 
surge that evening pushed the river up another 5 feet to a reported stage 
of Ml-. 5 feet around 2100 Pacific Standard Time (PST) . One observer specu- 
lated that this rapid rise and even more rapid recession was caused by the 
breaching of a slide across the South Fork of the Smith River. 

The maucimvun flow past the "Smith River near Crescent City" stream 
gage was reported to be 192,000 cfs comp&red to the 1955 peak of 165,000 cfs. 

Tabulated below are representative stream and rainfall data avail- 
able at this time. 

TABLE 2 

REPRESENTATIVE RAIHFALL TOTALS FOR THE DECEMBER STORM 
SMITH RIVER BASIN 



Precipitation 
Gage 


Rainfall Period 
(inclusive) 


Rainfall Total 
(inches) 


Crescent City 

Crescent City 7EME 

Gasquet Ranger 
Station 


19-27 

19-27 

19-27 


9.21 
18.71 

26.59 



■12- 



TABLE 3 

SELECTED PEAK RUNOFF EVENTS 
SMITH RIVER BASIN 



Stream 
Gaging 
Station 


Drainage 

Area 
(Sq. Mi.) 


Provisional 

Peak Flow 

(cfs) 


Peak 

Discharge 

Per Sq. Mi. 


Dec. 20-26, Runoff Volume | 


SFD 


Acre- 
Feet 


Inches 

Per 
Sq. Mi. 


Smith River nr 
Crescent City 


613 


192,000 


3U 


35^,000 


700,000 


22 



Klamath River Basin 

The December flood affected devastation throxighout the Klamath 
Basin from Iron Gate Dam in extreme north central California to the com- 
munity of Klamath at the mouth of the river. The flood completely destroyed 
the important USGS stream gages on the Klamath River near Seiad Valley, and 
at Somesbar, in addition to inxmdating the gage below Iron Gate Dam and near 
Klamath. Many of the historic peaks which occxirred in 1955 were exceeded. 
Only in the Trinity River subbasin were there instances of peak flows lower 
(because of Trinity Dam) than those occurring in 1955. 

The following analysis first discusses the flood on the Klamath 
River from Iron Gate to Somesbarj then on the Trinity River from Trinity 
Dam to Hoopa; and lastly in the ungaged region from Klamath to Somesbar and 
Hoopa. Because of data limitations, this discussion has to be limited to 
generalities. 

At Iron Gate Dam, Pacific Power and Light (PP&L) reported that a 
peak spill of arovuad 23,000 cfs occurred at 2100 PST on December 22 over the 
745-foot long side-channel spillway. The spillway has a design capacity of 



-13- 



30,000 cfs. The region above Iron Gate Dam (and from Shasta Valley) has 
perennially produced significantly lower runoff than the downstream regions 
through the combined effect of topography, diversions, and a series of four 
major PP&L dams. This flow past Iron Gate Dam during the flood merely sus- 
tained the recession further downstream. 

The Shasta River peaked at 12.i^8 feet about 2200 PST, December 22. 
In 1955, the river peaked at 9.i<-3 feet (6,090 cfs). The Shasta River is 
partially regulated by the 72,000 acre-foot Lake Dwinnel. 

On the Klamath River at the Oak Knoll Ranger Station, an observer 
reported a peaJt 2 feet higher than the 1955 crest had occurred around l800 
PST, December 22. No discharge figures are available as this is not a rated 
section. The ranger estimated the recent peak to be 10 feet above flood 
stage. 

At Happy Carap, another Forest Service ranger provided important 
relative stage data on the crest at this community. His data indicates the 
December flood peaked at around 0100 PST, December 23, approximately 10 feet 
above the 1955 crest. 

Immediately above the "Klamath River at Somesbar" stream gage the 
Salmon River flows into the Klamath River. A Corps of Engineers' field team 
reported that a 2 to 3 million cubic yard slide occurred in the Salmon River 
canyon about 6 miles upstream from the mouth of the river. Reports from 
residents indicate that the slide occurred several hours before noon on 
December 22, impounded water to an imknown depth and eventually breached 
around I7OO PST, December 22. 



■Ik- 



At the "Klamath River at Somesbar" stream gage, high water marks 
suggest that the peak flow was around 300,000 cfs (75-^ feet). This radio 
telemark stream gage was completely destroyed. 

Further downstream at Orleans, a crest occurred around 2^00 PST, 
December 22, approximately 13 feet above the 1955 crest. 

Tabulated below are peak stage data for the Klamath River at 
various points. 

TABLE h 
PEAK STAGE DATA FOR THE KLAMATH RIVER 



Station 


Peak Stage 
Feet 


Time - Date 
of Peak 


1955 

Peak Stage 

Feet 


Iron Gate 

Shasta River 
near Yreka 

Oak Knoll 

Seiad Valley 

Happy Camp 
Somesbar 
Orleans 
Weitchpec 
Klamath Glen 


13.63 

12.1+8 
37.9 

90-91 
75.^ 

60 
70 
55. i^ 


2100 12/22/64 

2200 12/22/6k 

1800 12/22/64 

Evening of 
December 22 

0130 12/23/64 

2300 12/22/64 

0100-0200 12/23/64 

0200 12/23/64 


9.43 
35.9 
29.2 

81-82 

59.^ 
47 
50 
49.7 



Trinity Subbasin 

During the storm period December 19-26, Trinity Reservoir stored 
approximately 372,200 acre-feet of runoff from the 718-square mile basin 



■15- 



above the dam. Apparently only 10 inches of runoff was contributed from the 
upstream area. The peak inflow to the reservoir probably occurred around 
l400 PST, December 22., judging from reports received on the "Trinity River 
above Coffee Creek" stream gage which indicated the peak passed at 1230 PST 
that day. 

Further downstream, "Trinity River near Burnt Ranch" stream gage 
recorded a peak of 79,000 cfs (29. 8U feet) occurring at 2^400, December 22. 
This flow was 93,000 cfs below the 1955 peak. (Trinity Reservoir un- 
doubtedly had a peak inflow in excess of 100,000 cfs and was responsible 
for the comparatively low flows throxogh this reach of the river. ) 

Along the South Fork Trinity River, peaks occurred in the late 
afternoon of December 22 in the upstream regions. At the "Trinity River 
near Salyer" stream gage, a peak of 95,000 cfs (^7«6 feet) was generated 
aroiond 2^*00 PST, December 22, compared to the 1955 peak of 65,100 cfs 
(39.^ feet). 

Near Hoopa, the reported peak of 260,000 cfs (^2.3 feet) occurred 
aroxmd 0200 PST, December 23. The peak here was probably caused by the near 
coincidence of the two peaks from the Trinity River and South Fork Trinity 
River plus heavy local runoff. 

At this time, hydrographs of the Trinity River are not available 
for presentation here. Representative rainfall totals for the Klamath and 
Trinity River Basins are tabulated below. 



.16- 



TABLE 5 

REPRESENTATIVE RAINFALL TOTAIS FOR THE DECEMBER STORM 
KLAMATH RIVER BASIN 



Precipitation 


Rainfall Period 


Rainfall Total 


Gage 


(inclusive) 


(inches) 


Orleans 


19-26 


17.66 


Klamath Glen 


19-26 


18.15 


Yreka 


19-26 


10.03 


Fork Jones 


19-26 


6.50 


Happy Camp 


19-26 


16.07 



TABLE 6 

REPRESENTATIVE RAINFALL T0TAI5 FOR THE DECEMBER STORM 
TRINITY RIVER BASIN 



Precipitation 


Rainfall Period 


Rainfall Total 


Gage 


(inclusive) 


(inches) 


Forest Glen 


20-26 


22.06 


Big Bar RS 


19-26 


12.91 


Salyer RS 


19-24 


15.78 


Hayfork RS 


19-26 


10.03 


Hoopa 2SE 


20-26 


18.70 


Coffee Creek RS 


20-26 


15.56 



At "Klamath River near Klamath" streeun gage a flov of about 
650,000 cfs (55.3 feet) reportedly occurred around 0200 PST, December 23, 



-17- 



This tremendous discharge completely inxmdated the community of Klamath to 
a depth of 15 feet. 

At this time, preliminary analysis shows that the hydrological 
mechanism which generated the peak at the town of Klamath was the result 
of the following: 

(1) The surge from the Salmon River canyon, 

(2) The tremendous local inflow from the basin below the 
Somesbar (Klamath River) and Hoopa (Trinity River) stream gages, 

(3) The flow from the Klamath River above the Somesbar 
stream gage, and 

(U) The flow from the Trinity River above the Hoopa stream 
gage. 

Available reports would indicate that the surge from the Salmon 
River passed the town of Klamath before the 0200 PST peak. However, the 
recession from this surge would have been in progress to supplement the 
0200 PST peak. 

Analysis of the local xingaged area has shown it to be potentially 
a significant contributor of runoff. In fact the entire area possesses 
hydrological and topographical characteristics similar to the Smith River 
Basin from which acceptable analogies have been drawn. A synthesized 
hydrograph for this area shows that a peak of over 130,000 cfs could have 
been generated from the intense rainfall beginning the late afternoon of 
December 21. This local inflow peaJi would have passed Klamath several 
hours before the heavy contribution from the upper Klamath and Trinity 
Rivers arrived, but as with the Salmon surge, would have supplemented the 
0200 PST peak. 



-18- 



The contribution from the Trinity River woiild have appeared in the 
downstream area before the record flows from the Klamath River became avail- 
able. However, the time (in view of the hydrograph's durations) between 
arrival of these two peaks would have been insignificant. Thus, the near 
coincidence of the record flows out of the Klamath £uad Trinity Rivers 
supplemented by significant local inflow and the Salmon River surge combined 
to produce the destructive flows that inundated the town of Klamath. 



Redwood Creek Basin 

The USGS maintains two stream gages along this 50-mile long river. 
The upstream gage is known as "Redwood Creek near Blue Lake" and is set 
several hundred feet upstream from Highway 299 bridge, while the second 
gage, at Orick, is near the mouth of the river. The upstream river gage 
and an adjacent rain gage (Redwood Creek O'Kane) are equipped with radio 
telemarks which can be interrogated by the Eureka Weather Bureau. 

During the December delvige over the Redwood Creek Basin, the up- 
stream river gage withstood the record flow and, along with the rain gage, 
was interrogated frequently from Eureka. The downstream gage, however, was 
partially torn loose from the U. S. 101 highway bridge to which it is 
attached. Nonetheless, an observer at Orick was able to provide valuable 
stage information almost to the crest before he was forced to evacuate 
through a foot of water in his establishment. 

These three gages were able to provide some interesting data on 
the character of the storm and flood in the basin. Interesting because the 
voliime of runoff past the upstream gage was conrputed to be 27.9 inches from 



■19- 



December 20 through December 26, whereas the measured rainfall at the 
adjacent rain gage for the same period was 2k inches. Heavier upstreeun 
rainfall, poor rain gage ejcposure, rain gage location, and/or high winds 
could have acted individually or collectively to produce the obvious 
inconsistency. It can be said (with some reservation) that an average of 
about 35 inches of rain should have occiirred over the basin. 

The rain at Redwood Creek O'Kane, of course, ceinnot be teiken as 
representing the basin average rainfall. However, since no rain gages are 
located in the basin above Redwood Creek O'Kane, no reasonable quantitative 
estimate of heavier upstream rain is possible at this time. 

Heavier rainfall (other than that indicated at O'Kane) did occur 
in the basin above "Redwood Creek near Blue Lake". Table 7 illustrates 
that, per square mile, the region above this gage produced substantially a 
greater runoff volvune — somewhere in the order of 30 percent. That is, 
the basin above the upper gage produced about 0.7^ sfd/sq.mi., whereas the 
basin between the Blue Lake gage above the Orick gage generated 0.56 sfd/ 
sq.mi. The rain gaige is protected by a tall, dense, circumjacent stand of 
trees which aJJ.eviate localized gusts near the orifice. High winds accompa- 
nied the rainfall throughout the North Coast and this factor remains as one 
of the most probable agents responsible for the discrepancy between rainfall 
and runoff. Weather stations at Areata and Red Bluff indicated wind 
velocities in excess of 50 miles per hour. 



-20- 



TABLE 7 

SELECTED PEAK RUNOFF EVENTS 
REDWOOD CREEK BASIN 



Stream 
Gaging 
Station 


Drainage 

Area 
(Sq. Mi.) 


Provisional 

Peak Flow 

(cfs) 


Peak 

Discharge 

Per Sq. Mi. 


Dec. 20-26 Runoff Volume 


SFD 


Acre- 
Feet 


Inches 

Per 
Sq. Mi. 


Redwood Creek 
nr Blue T^ke 

Redwood Creek 
at Orick 


67.5 
278 


15,100 
50 ,000 


224 
180 


50,600 
169,000 


100,000 
3^40,000 


28 
23 



As on other North Coastal rivers there occurred two distinct peaks, 
approximately 2k hours apart, with the first and lower crest occurring on 
the afternoon of December 21. The first rise was generated by the brief but 
intense burst of rainfall from O7OO PST to 1100 PST on December 21. 

TABLE 8 
TIME TO PEAK FROM END OF PEAK RAINFALL 



Gaging 
Station 


December 21, 196^ 


December 22, 1964 


Time 
of Peak 


Time 
to Peak 


Time 
of PeaJc 


Time 
to Peak 


Redwood Creek 
near Blue Leike 

Redwood Creek 
At Orick 


1300 PST 
1700 PST 


2 hours 
6 hours 


1400 PST 
1900 PST 


hours 
3 hours 



Following 6 hours of insignificant rainfall, over 8.5 inches of 
rain were reported at the rain gage during the next 21 hovirs. This produced 
a peak at "Redwood Creek near Blue Lake" of around 15,000 cfs and a stage of 



-21- 



15.6 feet, (compared to 12,100 cfs and stage of 13.68 feet in 1955). 
Further downstream at Orick a peak near 50,000 cfs occurred several 
hours later. 

Time of peaks tabulated here disagree somewhat with the 
figures shown in Table 8. Examination of the hydrographs on Plate 11 
indicate that the river had effectively peaked (within 0.2 foot) 
slightly earlier from the prolonged, intense burst of rainfall be- 
ginning 1700 PST, December 21. In the basin above Blue Lake, the 
ratio of rain to niDoff was approaching (if not equaling) unity. In 
other words, almost 100 percent was occurring as runoff. The intense 
rain had (by itoO PST, December 22) completely satxxrated the basin so 
that even had the rain continued at the same intensity, a substantially 
higher peak would not have occurred. 



Mad River Basin 

On December 20, an observer at Ruth Dam reported a 24-hour 
total rainfall of 5.77 inches. Runoff from this rainfall was sufficient 
to fill the nearly 3^000 acre-foot of storage remaining in Ruth Reser- 
voir and initiate minor spilling over the 100-foot wide spillway. Thus, 
the new Ruth Dam (maximum capacity 51^800 acre-feet) was not able to store 
(permant,:,tly) any of the excessive runoff that resulted from the heavy 
rain during the subsequent two days. The voliime of runoff contributed 
from the Mad River Basin above Ruth Dam has been estimated to be 



-22- 



approximately 129,000 acre-feet (20 inches per square mile) for the period 
December 20 through 26, inclusive. 

At "Mad River near Forest Glen" stream gage about 9 miles down- 
stream, a reported peak of 20,100 cfs (16.86 feet) occurred at 1700 PST, 
December 22. This crest was far below the 1955 peak of 39,200 cfs 
{2k.3 feet). 

At "Mad River near Areata" stream gage, a peak of 71,000 cfs (23.4 
feet) occurred at 0200, December 23. In 1955, the Mad River near Areata 
peeiked at 77,800 cfs (27.30 feet). The intakes to the stream gage were 
damaged such that drawdown within the gage well occurred. The discharge 
was rated to the 26.0-foot high water mark found on the outside of the well. 

TABLE 9 

SELECTED PEAK RUNOFF EVENTS 
MAD RIVER BASIN 



Stream 
Gaging 
Station 


Drainage 

Area 
(Sq. Mi.) 


Provisional 

Peak Flow 

(cfs) 


Peak 

Discharge 

Per Sq. Mi. 


Dec. 20-26, Runoff Volume | 


SFD 


Acre- 
Feet 


Inches 

Per 
Sq. Mi. 


Ruth Dam 

Mad River nr 
Forest Glen 

Mad River nr 
Areata 


119 
k8k 


20,100 
71,000 


141 
IU7 


65,000* 
213,000 


129,000* 
i^20,000 


20* 
16 



♦Estimated 



■23- 



TABLE 10 

REPRESENTATIVE RAINFALL T0TAI£ FOR THE DECEMBER STORM 

MAD RIVER BASIN 



Precipitation 
Gage 


Rainfall Period 
(inclusive) 


Rainfall Total 
(inches) 


Forest Glen 
Bridgeville 
Blue Lake Guest 


20-26 
20-26 
20-21+ 


22.06 
16.99 
17.98 



Ruth Dam probably held in temporary storage about 2l+,000 acre-feet 
(3.76 inches) during the time of peak nonoff. Because of this, the reser- 
voir probably delayed the upstream peak contribution eind alleviated the 
downstream crest until portions of intervening local inflow passed the 
Areata gage. 

Mattole River Basin 

The 2lK)-square mile Mattole River Basin experienced heavy rainfall 
during the storm period. At Honeydew, a December 19-21+ rainfall total of 
26.0 inches was recorded. 

The resulting runoff generated a peak flow of over 80,000 cfs 
(28.2 feet) on December 22, well below the 90,1+00 cfs (29.6 feet) recorded 
in 1955. 

Eel River Basin 

Every importajit stream gage in the Eel River was either destroyed 
or inundated. At this time, only the Fembridge stage hydrograph is com- 
plete for the entire storm runoff duration. The following discussion is 



.21+. 



therefore based on preliminary high water marks and corresponding peak dis- 
charges. Residents of the "basin provided information on the time the crest 
apparently occurred. 

Scott Dam is a concrete gravity structure situated in the head- 
waters of the Eel River Basin north of Clear Lake. At the start of the 
storm, only l6,400 acre-feet of storage (1.05 inches/square mile) was avail- 
able behind Scott Dam in Lake Pillsbury. The reservoir became full early 
December 21 and by I6OO PST that day was reportedly spilling 6,kO0 cfs. At 
the peak the following afternoon, approximately 58^000 cfs was passing over 
the crest of the dam. The time of this peak was probably around I9OO PST. 
Eight miles downstream at Van Arsdale Dam an observer recorded the passage 
of a crest at I93O PST, December 22, which was later estimated to be 62,000 
cfs. Scott Dam undoubtedly attenuated the inflow hydrograph both in magni- 
tude and duration, causing the time of peak contribution to be delayed 
several hours in the downstream regions. 

At the "Eel River above Dos Rios" stream gage, high water marks 
indicated that the river crested at 5U feet (175,000 cfs) about 8.6 feet 
above the December 1955 peak. 

On the Middle Fork of the Eel River, the U. S. Forest Service 
rangers near Covelo provided valuable stage information. They indicated 
that a minor peak occurred at 2000 PST, December 21 as a resvilt of the 
heavy rain which fell around noon. A prolonged intense period of rainfall 
through the morning of the 22nd generated a peak flow of 165,000 cfs 
(33.1 feet) at 2100, December 22. The I955 peak was 89,100 cfs (25.0 feet). 



■25- 



TABLE 11 

SELECTED PEAK RUKOFF EVENTS 
EEL RIVER BASIN 



Stream 
Gaging 
Station 


Drainage 

Area 
(Sq. Mi.) 


Provisional 

Peak Flow 

(cfs) 


Peak 

Discharge 

Per Sq. Mi. 


Dec. 20-26, Rimoff Volume 


SFD 


Acre- 
Feet 


Inches 

Per 
Sq. Mi. 


Eel River 
below 
Scott Dam 

Eel River at 
AldeiTpoint 

South Fork 
Eel River 
nr Miranda 

Eel River 
at Scotia 


290 
2,079 

537 
3,113 


58,000 
600,000 

200,000 
750,000 


200 
289 

372 
241 


104,200 
1,510,000 

390,000 
1,860,000 


207,000 
2,980,000 

772,000 
3,720,000 


13 
27 

27 
22 



At the "Eel River below Dos Rios" stream gage, the reported peak 
was 460,000 cfs (63.1 feet) occxirring around I8OO PST, December 22. 

Further downstream on the Eel River at Alderpoint a reported peak 
of 600,000 cfs (90.5 feet) occurred around 2000 PST, December 22. This is 
approximately 224,000 cfs and I8 feet above the 1955 peaks. At O6OO PST, 
December I9, the stage was 4.9 feet, indicating that the river rose 85.6 
feet in 86 hours. Extremely heavy flows eminating from the North Fork 
contributed markedly to this peak. 

In the headwaters of the South Fork Eel River, near Branscomb, a 
peak of 19,900 cfs (l6.l4 feet) occurred on December 22. Further downstream 
a peak estimated at 200,000 cfs (45.9 feet) was interpreted from high water 
marks at the inundated stream gage of "South Fork Eel River near Miranda". 



-26- 



Apparently the ^3*9 square miles above the Branscojnb gage did not experience 
as heavy rainfall as occ\irred in the South Fork basin below. In addition, 
the peak at Branscomb was slightly lower than the 1955 peak. 

The stream gage near Miranda is a radio telemark stream geige 
interrogated from Exireka. Aroxmd 2200 PST, December 21, the power to the 
relay station atop nearby Pratt Mountain was lost and no signals could be 
received from the Miranda gage. The last available reading was taken at 
2135 which indicated a stage of 31.7 feet -- around 100,000 cfs. The river 
had been holding steady near this stage for three hours — probably as the 
result of a short period of light rainfall. The subsequent period 
of intense rainfall beginning the late afternoon of December 21 and con- 
tinuing through the following morning, generated the -peak, of 200,000 cfs at 
about 1800 PST, December 22 — 27,000 cfs above the 1955 peak. 

At Scotia, the Eel River reportedly peaked at around 750,000 cfs 
(70 feet) on December 23 at 0200 PST, over 200,000 cfs and 8 feet above the 
previous maximum of 1955 • The last reported stage received from this stream 
gage before it malfunctioned was 6I.9 feet (the I955 peak stage) at 1200, 
December 22. 

At Bridgeville, on the Van Duzen River, a peak of i^9,800 cfs 
(22.6 feet) was reported. In 1955 7 the Van Duzen River crested at ^3,500 
cfs (21.3 feet). Residents living 20 miles downstream at the confluence of 
the Van Duzen and Eel Rivers reported that the peak from the Van Duzen 
occurred simultaneously with that from the Eel River. 

At Fembridge, a wire-weight gage was used to determine the Eel 
River's stage during the flood. The peak at the bridge was estimated to be 



■27- 



29.5 feet occurring arovind 0400 PST, December 23. The previous majctmum 
stage in 1955 was 27.7 feet. The discharge could have exceeded 800,000 cfs. 
Representative December storm rainfall totals recorded at various 
points in the Eel River Basin are tabulated below. 

TABLE 12 

REPRESENTATIVE RAINFALL TOTALS FOR THE DECEMBER STORM 

EEL RIVER BASIN 



Precipitation 


Rainfall Period 


Rainfall Total 


Gage 


(inclusive) 


(inches) 


Standish-Hickey S.P. 


19-26 


28.62 


Alderpoint 


19-25 


17.52 


Garberville 


20-26 


21.75 


Dos Rios 


19-24 


23.32 



Consistent time periods are not available at this time. The high 
winds (over 50 miles per hour) occurring throughout the North Coast un- 
doubtedly affected the above rainfall totals. 

From the Eel River Basin above Dos Rios, the runoff — though 
record breaking -- does not appear to have been capable of contributing 
markedly to the downstream peaks. In the Middle and North Forks of the 
Eel River, reports indicate that staggering runoff amounts occurred. 
Apparently heavy, but unreported, precipitation fell in these two subbasins. 

The record runoff thro\aghout the South Fork basin was most 
certainly generated by heavier rainfall than that reported. The lack of 
rainfall recording charts in the basin, coupled with high winds persisting 
through December 21 and 22, prohibits any accurate analysis at this time. 



-28- 



Undoubtedly though, the character of the rainfall eind resulting runoff was 
similar (but on a larger scale) to that propagated in the Redwood Creek 
Basin. 

As the South Fork Eel River near Miranda reportedly crested two 
hours before the Eel River at Alderpoint, the peak contributions from these 
basins appeared separately at Scotia. However, the magnitude of the flows 
and near coincidence of peaks effectively combined to generate the record 
flows past Scotia and Fembridge. 

Russian River Basin 

Although rainfall amounts in the Russian River Basin were less 
than in other North Coast basins, high river stages occurred along the 
entire length of the Russian River. One exception to this general rainfall 
pattern apparently occurred above Coyote Dam where extremely heavy precip- 
itation totals were recorded. 

As a consequence, the peak inflow into Lake Mendocino (Coyote Dam) 
was 21,000 cfs as the river rose 5.20 feet above the 1955 recorded stage of 
15.06. This flood control reservoir effectively contained the excessive 
flows from the East Fork Russian River until the Russian River began 
receding in the downstream reaches. Storage increased from 70,800 acre-feet 
(0800 PST, December I9) to a maximum of 129,250 acre-feet (17OO PST, 
December 2^) . 

On the Russian River near Hopland, a reported peak flow of kl,200 
cfs (26.06 feet) occurred around I9OO PST, December 22. Further downstream 
at Healdsbirrg, a peak of 67,100 cfs (26.62 feet) occurred at Oi^30 PST, 
December 23, and at Guerneville 90,000 cfs (^9.6 feet) around I8OO, 
December 23. 



TABLE 13 

SELECTED PEAK RUNOFF EVENTS 
RUSSIAN RIVER 



Stream 
Gaging 
Station 


Drainage 

Area 
(Sq. Mi.) 


Provisional 

Peak Flow 

(cfs) 


Peak 

Discharge 

Per Sq. Mi. 


Dec. 20-26, Runoff Volume 


SFD 


Acre- 
Feet 


Inches 

Per 
Sq. Mi. 


East Fork 
Russian River 
nr. Calpella 

Russian River 
nr. Hopland 

Russian River 

near 

Healdsburg 

Russian River 

near 

Guemeville 


93 
362 

791 
1,3^^2 


21,000 
i+1,200 

67,100 
90,000 


226 
llif 

85 

67 


33,000 
101,000 

i9i+,ooo 
318,000 


65,000 
200,000 

385,000 
630,000 


13.1 
10.1^ 

9.1 
9 



Uniformly heavy rainfall (of about 11 inches for the storm period) 
was recorded in the basin below Coyote Dam, whereas extremely heavy but un- 
recorded rainfall occurred above Coyote Dam as indicated by Willits -Howard 
FRS. Table ih represents rainfall totals recorded at selected rain gages 
in and around the Russian River Basin. 



.30- 



TABLE 111 

REPRESENTATIVE RAINFALL TOTAIS FOR THE DECEMBER STORM 
RUSSIAN RIVER BASIN 



Precipitation 
Station 


Precipitation (Inches 


) 


Dec. 21-23 


Dec. 19- 2U 


Total Dec. 


Willits Howard 


19.00 


22.88 


31.09 


Ukiah 


9.68 


11.80 


16.52 


Hopland 


9.57 


11.76 


16.20 


Healdsbxurg 


9.59 


11.9^ 


15.55 


Guemeville 


7.57 


10.62 


1^.55 



Runoff Volvnne - North Coast 

The runoff volume from the heavy precipitation over the 
North Coast was the greatest of record. In 1955, most rivers experienced 
two major rises -- the second being the highest and responsible for the 
resulting devastation. In 196^, however, only minor rises preceded the 
record peaks of December 22 and 23. The subsequent runoff volximes therefore 
are not completely comparable. On a few Worth Coast streams the volume 
produced by the 1955 runoff with its two consecutive peaks exceeded the 
volume of the higher single-peaked runoff in 1964. The 1955 and 1964 
runoff voltimes are compared in the following tabulation. 



■31- 



TABLE 15 

ESTIMATED STORM RUNOFF VOLUMES FOR THE DECEMBER 
FLOODS OF 1955 AND 196^^ 



Drainage 
Basin 


Drainage 

Area 
(Sq. Mi.) 


December 1964 


December 1955 1 


Period 
(inclusive) 


RTinof f Volume 


Period 
(inclusive) 


Runoff Volume | 


Inches 


Ac re -Feet 


Inches 


Acre-Feet 


Smith 
River 


613 


20-26 


22 


700,000 


18-23 


18.2 


600,000 


Klamath 
River 


6,180* 


20-26 


9 


3,020,000 


20-26 


8.3 


2,730,000 


Redwood 
Creek 


278 


20-26 


23 


3^,000 


I8-2I1 


13.8 


200,000 


Mad River 


kdk 


20-26 


16 


i^20,000 


18-24 


14.6 


380,000 


Van Duzen 
River 


320 


20-26 


19 


320,000 


18-24 


15 


260,000 


Eel River 


3,113 


20-26 


22 


3,720,000 


20-26 


14.8 


2,450,000 


Mattole 
River 


2^0 


20-26 


22 


280,000 


18-24 


27.4 


350,000 


Russian 
River 


1,3^ 


20-26 


9 


630,000 


19-25 


11.6 


830,000 


Other 
















Coastal 
Streams 

Total 


1,500 


20-26 


12 


960,000 


18-24 


13 


1,040,000 


10,390,000 


8,860,000 



•*The basin above the upstream community of Klamath River (near the confluence 
of the Shasta and Klamath Rivers) has not been included. 



For the Eel River the 1964 rvinoff voliime was 49 percent more than 
that for 1955. The Smith and Klamath Rivers had respectively 21 percent and 
8 percent greater total rxmoff. For the North Coast as a whole, the volume 
of water which passed into the Pacific Ocean from December 20-26 has been 
estimated to be around 10.4 million acre-feet. 



The runoff volimes calculated above will disagree vith earlier 
published figures because of information received Just prior to publication 
of this report. 

Central Valley Area 

As the storm pushed further inland, heavy rainfall created major 
rises in many streams draining from the leeward or eastern side of the 
Coast Rajige and in most streams flowing to the Central Valley from the 
Sierra Nevada north of Stockton. Hydrographs of selected streams and reser- 
voir operations are illustrated on Plates 15-24. Gage heights for selected 
streams in the Central Valley are tabulated on Plates 25-27. 

From the drainage area above Shasta Dam, inflow increased to a 
peak of 187,100 cfs, which may be compared to the 201,000 cfs flood crest 
that occurred in December 1955- Shasta Reservoir again controlled the 
flood water and the storage was increased nearly 800,000 acre-feet. The 
regulated releases from Keswick Dam reached 50,000 cfs. 

By mld-aftemoon of December 22, the rising stages created by the 
heavy rainfall became flood crests of record levels for many streams flowing 
from the Coast Range. Cottonwood Creek near Cottonwood surpassed the previ- 
ous high stage of 15.4 feet and 52,300 cfs which was recorded in 19^1 . The 
new maximum stage is I9.6 feet and 56,000 cfs. Thomes Creek at Paskenta 
also experienced a new maximiim stage, 15.3 feet and 33^000 cfs, which 
exceeded the December 1955 stage of 13*9 feet and 23,500 cfs. Ord Ferry on 
the Sacramento River crested at 173,000 cfs with a stage of II9.O feet. 

Streams flowing from the northern Sierra Nevada began to rise as 
the rainfall intensified over the Feather, Yuba, and Americeua River Basins 



■33- 



during the early evening hours of December 22. The Feather River crested 
above Oroville Dam, which is presently \inder construction, at a peak flow 
of approximately 250,000 cfs. Near midnight, this peak was reduced by the 
partially completed dam to a peak outflow from the two diversion tunnels of 
about 157,000 cfs. The dam is being built over the old stream gaging 
station. Feather River near Oroville, where previous high flows were 
ejcperienced in 1937 (l85,000 cfs), 19^ (152,000 cfs), 1955 (203,000 cfs), 
and 1963 (191,000 cfs). The previous historic maximum flow of 230,000 cfs 
was recorded in 1907 at a point five miles below the dam. 

The Yuba River at Englebright Dam also established a record when 
it reached a stage of 5^6.0 feet and a peak flow of 166,000 cfs. This is 
the second new maximum since the near- legendary flood of 1955 established 
a record stage of 5H.7 feet with a flow of 1^*8,000 cfs. In February I963 
a peak flow of 150,000 cfs was recorded at a stage of ^kk.& feet. 

These record flows contributed to the anxiety of Yuba City resi- 
dents where channel clearing during recent years and a delayed Feather peak 
kept the flood crest stage at 76. U2 feet. A stage of 82.^*^2 feet was 
reached at the time of the disastrous levee failures in December 1955* 

A few smaller streams in the Sacramento Valley also experienced 
new maximum flood stages. Butte Creek near Chico reached a stage of lU.l 
feet with a flow of 21,300 cfs. 

Rainfall in the American River basin created high stages on most 
tributaries above Folsom Reservoir. Hell Hole Dam, a small sloping-core 
rockfill structure being built on the Middle Fork, failed Tjnder the stress 
of the flood water. This partially-completed dam retained approximately 
30,000 acre-feet before failure occurred. This volume of water added to 



■ Sh- 



the peak inflow to Folsom Reservoir which reached 280,000 cfs. Previous 
maximum inflows occurred in December 1955 (218,000 cfs) and February 1963 
(2^40,200 cfs). 

Storage in Folsom Reservoir increased 322,000 acre-feet and 
controlled releases were increased to a peak rate of 115,000 cfs. These 
releases were reflected in high stages at the "H" Street Bridge in 
Sacramento which attained a crest at 41.89 feet. 

The flow from the American River, together with approximately 
75,000 cfs at Verona on the Sacramento River, required the opening of all 
k& gates at the Sacramento Weir. Total flow past Sacramento including both 
the Sacramento River and the Yolo Bypass was estimated to be 4^4^5,000 cfs. 

All weirs of the Sacramento River Flood Control Project experienced 

periods of overflow, and this data is stumnarized in the following table. 

TABLE 16 

SACRAMENTO RIVER FLOOD COHTROL PROJECT 
WEIR OVERFLOW DATA 



Weir 


Beginning of Overflow 


Period of 

Overflow 

(hours) 


Peak -cage 
and Distiharge 


Date 


Time 


Moulton 


12/22/6^1 
1/V65 


1930 
1545 


163 


82.38 
82.14 


25,600 
23,600 


Colusa 


12/22/64 


1520 


520 


68.06 


69,500 


Tisdale 


12/22/64 


1900 


* 


50.10 


29,000 


Fremont 
(West End) 


12/22/64 


2000 


* 


39.5 


245,000 


Sacramento 


12/23/64 


0310** 


222*** 


32.35 


101,500 



♦Continued overflow January I9, I965. 
**First group of five gates opened; all gates open by I503 on 12/23/64. 
***Closing operations began O8OO on 12/30/64 and all gates were replaced 
by 0900 on 1/1/65. 



-35- 



South of the American River Basin rainfall amounts were generally 
less than the 20- to to- Inch totals which fell farther north. Stream levels 
reflected the lesser rainfall; however, several streams at the northern end 
of the San Joaquin Valley experienced notable peak flows. The Cosumnes 
River at Michigan Bar, for example, reached a crest of 13. 8 feet and a flow 
of 37,500 cfs which was not far below the December 1955 stage of lU.59 feet 
and flow of i+2,000 cfs. 

Stream gaging stations on the San Joaquin River north of Newman 
recorded rises which were generally due to releases made from Sierra reser- 
voirs on the Stanislaus and Tuolumne Rivers. However, early in January when 
additional rainfall occurred and after flood-retention ability of most of 
these reservoirs had been exhausted, the releases were increased. Flow from 
Exchequer Reservoir on the Merced River, Melones and Tulloch Reservoirs on 
the Stanislaus, Don Pedro on the Tuolumne, in addition to local runoff from 
the Merced County Stream Group (Bums, Bear, Owens, and Mariposa Creeks), 
caused a crest stage of 28.2 feet and 21,200 cfs at Vemalis on January 12. 



■ 36- 




DECEMBER 2l+, 1961+ 



AERIAL VIEW OF B I DWELL BAR ABOVE DEBR I S -CHOKED 
CONFLUENCE OF MIDDLE AND NORTH FORKS OF FEATHER 
RIVER. BACKWATER CREATED BY OROVILLE DAM 
EMBANKMENT EXTENDED UPSTREAM TO MIDDLE FORK 
BRIDGE UNDER CONSTRUCTION. 



(DWR Photo) 



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DECEMBER 2k, i96.ll 



AERIAL VIEW OF BORROW AREA ALONG FEATHER RIVER BELOW OROVILLE 
AND OROVILLE DAM EMBANKMENT. HISTORIC DREDGER TAILINGS AT 
RIGHT CENTER OF PICTURE PARTIALLY INUNDATED BY FLOOD WATERS. 



(DWR Photc: 




•ECEMBER 23, T96k 



AERIAL VIEW OF FEATHER RIVER AT OROVILLE LOOKING DOWNSTREAM. 
HIGHWAY 1+OA AT LEFT BANK; CONTRACTOR'S HAUL RAILROAD IN 
CENTER. NOTE PARTIALLY INUNDATED TRACKS IN BACKGROUND. 



(DWR Photo) 




DECEMBER 25, ^^6k 



BRIDGE AND FLOODED ORCHARDS — FEATHER RIVER NEAR BORROW AREA. 



(DWR Phot ) 




^ if 



A 



CEMBER 2H, 196H 



AERIAL VIEW OF MARYSVILLE LOOKING SOUTHWEST. 



(DWR Photo) 



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DECEMBER 23, I96U AERIAL VIEW OF TOWER BRIDGE AT SACRAMENTO RIVER AT SACRAMENTO. (DWR Photo) 



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ECEMBER 28, 1964 



EMERGENCY REPAIRS BEING MADE TO LEFT BANK OF 
AMERICAN RIVER BELOW "H" STREET BRIDGE. 
SACRAMENTO STATE COLLEGE IN BACKGROUND. 



(DWR Photo) 



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FLOOD AREAS MP FLOOD DAMAGE 

North Coast Area 

The first day of winter, December 21, 196^, rather appropriately 
arrived with heavy rains in Northern California. However, as discussed on 
preceding pages the rain became an extended downpour with subsequent dis- 
astrous flooding. 

On many swollen streams in the North Coast, walls of water tore 
down highway and railroad bridges, overturned autos, smashed houses and farm 
buildings, and swept away entire villages. The North Coast, where flood 
control works are essentially nonexistent, was hardest hit, but this intense 
Christmas week storm caused extensive flooding of urban and suburban areas 
throughout Northern California. Thirty- four counties received damage, smd 
Governor Brown proclaimed all of these counties as disaster areas. Six of 
these counties, located in the northwest area, suffered flood damage exceed- 
ing the combined deimage to all other counties. These six coxmties, Del 
Norte, Humboldt, Mendocino, Siskiyou, Trinity, and Sonoma, where there is 
almost no flood protection, suffered complete havoc. The few existing flood 
control projects on the Mad, Eel and Russian Rivers saved millions of 
dollars, and the proposed projects for the Eel River delta would have saved 
millions more. 

Various categories of flood damages to the six North Coast counties 
noted above are discussed in the following pages and summarized in tables IJ , 
18, 19/ 20, and 21. It should be noted that estimates relative to damage and 
costs are necessarily preliminary following a disaster -- and will probably 
change significantly when final reports are in. The majority of the damage 



-37- 



figures for the North Coast were obtained from the California Disaster Office 

and the Red Cross. 

TABLE 17 

FLOOD DAMAGE ESTIMATE 
(In Dollars) 



Cotmty 


Protective 

Health & 
Sanitation 


Dikes, 
Levees & 
Drainage 


Public 
Buildings 


Public 
Utilities 


Del Norte 


$ 100,000 





$ 1^3,000 


$ 140,000 


Siskiyou 


300,000 


$1,250,000 


150,000 


200,000 


Humboldt 


2,000,000 


1,500,000 


300,000 


10,000 


Trinity 


150,000 




90,000 


550,000 


Mendocino 


50,000 


200,000 


150,000 


25,000 


Sonoma 


500,000 


20,000 


100,000 


100,000 



It is difficult to bring the magnitude of this flood into focus, 
but some comparisons to the 1955 flood can be made. District I of the State 
Division of Highways encompasses the counties of Del Norte, Humboldt, 
Mendocino, and the westerly sections of Siskiyou and Trinity. In the 1955 
flood. District I lost one bridge — the one in Hoopa on the Trinity River. 
As an aftermath of the 1964 flood. District I records sixteen State highway 
bridges destroyed. The Humboldt County Road Department listed ten county 
bridges completely washed out or damaged beyond salvage. Virtually the whole 
region from Scotia to Crescent City was isolated as the rampaging Eel, Mad, 
and Klamath Rivers and Redwood Creek made U. S. Route 101 impassable. 

It has been estimated the State Division of Highways has at least 
a 2-year task to restore the highways and bridges to their pre-flood 
condition. 



-38- 



Again, the magnitude of this flood overwhelms that of the 1955 
flood when listing the number of cities and communities which have been 
devastated. 

Communities Destroyed 

Klamath 

Orleans 

Jfyers Flat 

Weott 

South Fork 

Shively 

Pepperwood 

Stafford 

Ti-Bar 

Communities Partially Destroyed 
Metropolitan 
Rio Dell 
Scotia 

Klamath and Orleans in the north, and Weott and Jfyers Flat in the 
south, are major centers of population, aside fiom the Eureka-Arcata, 
Forttma complex. The total extent of damages to many small hamlets has not 
yet been determined. The Crescent City area, hard hit by the flood, prompted 
Congressman Don Clausen (while accompajiying Governor Brown on his inspection 
trip) to remark "this is becoming the disaster district of the nation". It 
was Crescent City that suffered such havoc when struck by the Alaskan earth- 
quake tidal wave Easter weekend, 196^. 



-39- 



At Fembridge, the focal point of the Eel River stage measurements, 
the peak reached an estimated 29-5 feet, compared to the 1955 peaJc of 27.7 
feet. Flood stage is 17.0 feet. Some l+,000 persons abandoned their homes 
in at least ten towns in the redwood coiintry. At Orlck, 800 residents also 
fled their homes when the flashy Redwood Creek reached a height of 23.27 
feet, with a flood stage of 19 feet. 

In the co-unties of Del Norte, Siskiyou, Humboldt, Trinity, 
Mendocino, and Sonoma at least 1,025 homes were destroyed and 3>759 more 
damaged. Three hundred seventy-four small businesses were either destroyed 
or damaged, and over 800 farm buildings destroyed or damaged. 

TABLE 18 

ESTIMATE OF HOMES, FARM DWELLINGS AND TRAILER HOMES 

DESTROYED OR DAMAGED 

(In Dollars) 



County 


Amount 


Del Norte 


$ 7,232,000 


Siskiyou 


2,770,000 


Humboldt 


13,850,000 


Trinity 


980,000 


Mendicino 


500,000 


Sonoma 


5,875,000 



The timber industry is one of the primary supporters of the econo- 
mies of the northwest counties, ajid the flood damage was a devastating blow to 
the industry. Millions of board feet of lumber were lost when logs were swept 
from log decks and floated downstream. An estimated 100 million board feet 



-IJO- 



of lumber is in the Crescent City harbor and on the beach. Forest access 

roads, highways, and railroeuis were impassable. In some areas 80 percent 

of the county road system sustained major damage. Because of the lack of 

transportation for logs and cut lumber, 4,000 workers are without jobs, and 

an additional 8,000 workers will be affected as more than half the lumber 

mills face closure. Weekly payroll loss could rise to $675>000. 

Also hard hit was the dairy and livestock industry. Five thousand 

head of livestock were lost, thirty-five hundred of which were cows and 

calves. Pasture land was awash with mud and debris. Providing feed for 

the surviving cattle was a major problem, and sixty tons of hay and grain 

were flown to the area for the stai^ring cattle. 

TABLE 19 

ESTIMATE OF DAMAGE 
(In Dollars) 



County 


Debris 
Clearemce 


Hon-Federal 

Aided 
County Roads 


Federal 
Aided 
County Roads 


Del Norte 

Siskiyou 

Humboldt 

Trinity 

Mendocino 

Sonoma 


$ k6^,000 
250,000 
4,000,000 
150,000 
300,000 
100,000 


$1,050,000 
1,855,000 
6,500,000 
2,555,000 

2,550,000 

561,000 


$1,625,000 

1,598,000 

2,000,000 

120,000 

5,200,000 

5,000 



Preliminary flood damage estimates were compiled by the California 
Disaster Office from information collected by survey teams of State, Federal, 
and local public agencies, and Red Cross workers. Months of work by survey 
teams in the field and in the office will be necessary before the complete 
picture unfolds. 



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-42- 



As the grim task of cleaning up the flood- stricken areas started, 
the death toll began to rise. Rescue workers used helicopters to probe the 
slowly receding rivers for victims and survivors. Hundreds of persons had 
been stranded for days without food or shelter in the flood isolated valleys 
and foothills of the Eel River Canyon. Fog, rain, snow, and winds frustrated 
rescue efforts for areas which could be reached only by air and prolonged the 
misery of flood damage. 

As rescue operations swung into full scale, another storm whipped 
into Northern California with rains, snow, and hurricane gusts of wind. 
Rising rivers again forced an estimated 1,300 persons to flee for the 
second time from the Eel, Mad, Klamath, and Russian River Valleys, and 
evacuation centers were reopened. River crests from this second storm were 
far below the earlier flood stages, and additional flooding from the second 
storm was minor and could do very little material damage beyond the prior 
flood. 

Finally, on January 6, residents of the northwest area were able 
to relax a moment to look back — and ahead — as the rivers began to fall 
and the weather forecast for only scattered showers diminished the threat 
of renewed floods. 



.43- 



TABLE 21 
RED CROSS RECORDS - JANUARY k, I965 



County 


Deaths 


Injured 


Hospitalized 


Families 
Suffering Loss 


Del Norte 


1 


264 


15 


l,3i^2 


Siskiyou 


1 


101 


6 


800 


Humboldt 


19 


1,250 


30 


3,000 


Trinity 


2 


3 


3 


400 


Mendocino 


1 






hk6 


Sonoma 




35 


1 


2,214 



The Christmas week flood took its toll of human lives, livestock, 
houses, farms and even total villages — and it took something else too: 
water. 

A preliminary estimate showed 10.4 million acre-feet of water ran 
off into the sea from California's North Coast. This estimate includes 
everything from the Russian River north, including the Eel, Mad, Van Duzen 
and Klamath Rivers. 

This wasted water is more than the total of the yearly amoxrnt 
the State Water Project will deliver in 1990, plus the State's annual share 
from the Colorado River. 

Central Valley Area 
Flooded Areas 

In the Central Valley Area the total area flooded amounted to about 
375,000 acres. A breakdown of the estimated total of areas flooded, by major 



-44- 



drainage basins, are the Sacramento Basin - 325,000 acres, and the San Joaquin 
Basin - 50,000 acres. Major flooded areas included 20,000 acres on Thomes 
Creek, Cottonwood Creek and other Sacramento River tributaries in the vicinity 
of Red Bluff; 50,000 acres along Sacramento River, mainly from Red Bluff to 
Colusa; 75,000 acres in bypasses and floodways in the Sacramento Basin; 
100,000 acres in Butte Basin; 25,000 acres on Feather River and tributaries; 
20,000 acres along the Cosumnes River and in the Mokelumne-Cosumnes Delta 
area; and 18,000 acres on the Stanislaus River. 

It should be noted that estimates relative to damage and cost are 
necessarily preliminary following a disaster and will probably change signif- 
icantly when final reports are in. The majority of the damage figures listed 
here for the Central Valley Area were obtained from the U. S. Corps of 
Engineers. 

There are no known cases where people died in the Central Valley as 
a direct result of flooding; however, there are a number of instances where 
deaths occurred as an indirect result of the flood. These instances included 
such situations as people venturing out in a boat during high water and drown- 
ing as a result of the high flood flows. 

Flood Damages 

Preliminary estimates have been made of the flood damages for the 
December 196^+ - January I965 floods. These estimates should be considered 
as being only approximate. More final estimates will be made after detailed 
field examination. The estimates of flood damages contained here represent 
damages from stream overflow and stream bank and levee erosion. Losses from 
general storm damage, such as slides and falling trees, as well as from rain 



-ii5- 



damage or ponded surface water, have not been included. Total flood damage 
in the Central Valley Area is now estimated at about $29,000,000. 

Sacramento Basin 

The combined damages in the Sacramento Basin total about 
$25,000,000. About $7,000,000 of these damages occurred above the foothill 
line and represent loss of highway bridges, roads, cabins, a dam under 
construction, and other improvements. The $18,000,000 damages remaining 
represents losses on the valley floor area. Most of this damage was to 
agricultural properties and loss of livestock; however, the figure includes 
a substantial amount for flood fighting and levee repair at many locations 
where urban- suburban protection was involved. 

In the Sacramento River "Major and Minor Tributaries Project" the 
only levee breaks were on Deer Creek tributary to the Sacramento River near 
Vina. Here there were two levee breaks, one on the right bank and the other 
on the left bank situated just upstream from Keefer Road. 

Within the "Sacramento River Flood Control Project" the major 
problems were from boils and banks eroding from current action, and trees 
toppling and taking large sections of the berm with the root system, thus 
undermining the waterward slope of the levee system. In these cases rock 
riprap was dumped into the damaged reach. The other problem was erosion to 
levees caused by wave wash action. In these instances canvas panels or wood 
wave wash panels were placed to retard the erosion of the levee section. 
There were numerous trouble spots on the Sacramento River and four on the 
Feather River. On the Feather River, one problem area occurred on the right 
bank one mile downstream from Gridley Bridge, two on the right bank just 



-h6- 



below Shanghai Bend, and the other on the left bank downstream from 
Nicolaus. On the American River, a trouble spot developed on the left 
bank just downstream from the "H" Street Bridge on the City of Sacramento 
side. Flood fighting was also carried out on the levees of Cache Creek, the 
Sutter and Yolo Bypasses and several islands in the Delta region -- mainly 
Twitchell, Venice and Webb Tract. 

The flood fight utilized local agency and Department of Water 
Resources' forces and approximately 1200 inmates from conservation camps 
of the Department of Corrections. These inmate crews were in the immediate 
charge of about 250 crew chief personnel of the Division of Forestry who 
were in turn advised by Department of Water Resources' engineers. These 
forces represented about 20 conservation camps throiighout the state. The 
Division of Forestry also supplied approximately 20 pieces of heavy equip- 
ment such as dump trucks and bxilldozers. 

The only islands in the Delta that were inundated were the ones 
that are designed to go under diiring times of high water. They were 
Prospect, Liberty, Little Holland Tract, and McComiack and Williamson Tracts 
northeast of Walnut Grove. 

San Joaquin Basin 

Total damage in the San Joaquin Basin was near $4,000,000. Practi- 
cally all of this damage was below the foothill line and occurred to highly 
developed agricultural crop land. Major flooding occurred on the Stanislaus 
and Cosumnes Rivers, and damages of $2,000,000 and $1,500,000, respectively, 
resulted. About $500,000 total damage occurred on the Merced, San Joaquin, 
Chowchilla and Fresno Rivers, and on Merced County streams. 



-hi- 



In the "San Joaquin River Flood Control Project" there were nine 
breaks within a short reach of the left bank levee of the Stanislaus River 
in Reclamation District 2031 — which is just about at its confluence with 
the San Joaquin River. The district's levee along the San Joaquin River was 
opened to discharge the trapped flood water so that the land that was in- 
undated would drain. In the same general area on the right bank of the 
Stanislaus River, in Reclamation District 2064, there were six trouble spots 
within a two-mile reach caused by high flood flows. 

Another levee break occurred in the State's "Lower San Joaquin 
River Flood Control Project". The Eastside Bypass right bank levee was 
breached by flood water ponding on the landward side of the levee system. 
This breach occurred very near its junction with the San Joaquin River. 



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APPENDIX A 



TABLE A-1 



PEAK FLOWS AND STAGES 
(Preliminary Data, Subject to Revision) 



Stream and Station 


Drainage 
Area in 
Sq. Ml. 


Period 

of 
Record 


Source 

of 

Record 

(a) 


Previous Maximum 
of Record 


December 1964 - January 1965 


Date 


Stage 
in ft. 


Dlsohg. 
m cfs 


Date 


Time 


Stage 
In ft. 


Dlschg. 
In cfs 



North Coastal Area 



Shiith River near 
Crescent City 



613 



1931- USGS 12/22/55 tl.20 165,000 12/22/6t - 14.5*^ |1 92, 000**1 



Shasta River 
near Yreka 



796 ♦1933 USGS 12/22/55 9.43 6,090 12/22/64 2200 112 ."B**! 



Scott River near 
Fort Jones 



662 1941- USGS 12/22/55 21.40 38,500 No record - station destroyed 



Klamath River near 
Seiad Valley 



6,980 1912-25 USGS 12/22/55 29.2^ 122,000'' No record - station destroyed 
1951- 



South Fork Salmon 
River near Forks 
of Salmon 



252 



1953- USGS 12/22/55 18.86 24,200 12/22/64 - 21.73 I 31,000**1 



Klamath River 
at Somesbar 



8,480 1927- USGS 12/22/55 59.4 202,000° 12/22/64 - 75.4 |300,000**| 



Trinity River 
near Burnt Ranch 



1,438 1931-40 USGS 12/22/55 '*3 .2 172,000 12/22/64 2400 29.84 79,000 

1956- 



South Fork Trinity 
River at Forest 
Glen 



208 



1959- USGS 12/22/55 25.26 42,400 12/22/64 16OO 29.0 



62,000**1 



South Fork Trinity 
River near Hyampom 



342 1956- USGS 12/22/55 22.2"'^ 39,400 12/22/64 1530 |31-0**I ^ 



Hayfork Creek 
near Hayfork 



87.2 1956- USGS 2/8/60 11.67 4,210 12/22/64 1100 14.45 I 7,000**| 



Hayfork Creek 
near Hyampom 



379 



1953- USGS 12/22/55 18.00 25,300 12/22/64 - 19.13 | 29.000**1 



South Fork Trinity 
River near Salyer 



899 1911-13 USGS 12/22/55 39.4^ 65,100 12/22/64 2400 47.6 | 95,000**| 
1950- 



Wlllow Creek at 
Willow Creek 



Trinity River 
near Hoopa 



Klamath River 
near Klamath 



43.3 1959- USGS 12/2/62 10.02 



2,848 •1911- USGS 12/22/55 36.90 



12,100 *1910- USGS 12/22/55 49.?' 



5,190 No record - channel destroyed 
190,000 12/22/64 2100 42.3*" |260,000**| 
425,000° 12/23/64 0200 55.3^ |650,000**| 



Redwood Creek 
at Orlck 



278 1911-13 USGS 1/18/53 23.95^ 
1953- 12/22/55 23.95 



50,000 12/22/64 2200 23.27 50,000 
50,000 



Mad River near 
Forest Glen 



143 



1953- USGS 12/22/55 24.5^ 39,200 12/22/64 1700 I6.86 20,100 



A-1 



TABLE A-1 (Continued) 



Stream and Station 


Drainage 
Area In 
Sq. Ml. 


Period 

of 
Record 


Source 

of 

Record 

(a) 


Previous Maximum 
of Record 


December 1964 - January 1955 


Date 


Stage 
in ft. 


Dischg. 
In cfs 


Date 


Time 


Stage 
In ft. 


Dischg. 
in cfs 



North Coastal Area (Continued) 
Mad River near 



Areata 



Eel River below 
Scott Dam near 
Potter Valley 



Eel River at Van 
Arsdale Dam near 
Potter Valley 



Eel River above 
Dos Rios 



Black Butte River 
near Covelo 



Middle Fork Eel 
River below Black 
Butte River near 



Van Duzen River 
near Brldgeville 



Eel River at 
Fembridge 



Mattole River 
near Petrolia 



Russian River 
near Ukiah 



East Fork 
Russian Fliver 
near Calpella 



Russian River 
near Hopland 



484 



290 



349 



705 



162 



Covelo 


367 


Eel River below 




Dos Rios 


1,484 


North Fork Eel 




River near Mina 


250 


Eel River at 




Alderpolnt 


2,079 


South Fork Eel 




River near 




Brans comb 


43 


South Fork Eel 




River near 




Miranda 


537 


Eel River at 




Scotia 


3,113 



216 



240 



93.0 



362 



1910-13 USGS 12/22/55 27.30' 
1950- 



fi 77,800 12/23/64 0200 23.40*' 71,000'' 



1922- USGS 12/11/37 22.9^ 41,100*^ 12/22/64 - 24.2*" | 58,000**1 

1909- USGS 12/22/55 31.4*" 48,600 12/22/64 I900 - | 62,000**1 

1950- USGS 12/22/55 45.4*" 123,000° 12/22/64 - 54.0*' |175, 000**1 

•1951- USGS 12/21/55 35.8'''*' 25,000 12/22/64 - 33.0*" | 50,000**1 



1951- USGS 12/21/55 25.0' 



,100 12/22/64 2100 33.1 1165,000**1 



1911-13 USGS 12/22/55 49.86 283,000° 12/22/64 I8OO 63.1 |460,000«*| 

1951- 



1953- USGS 12/22/55 24.00 58,400 No record - station destroyed 

1955- USGS 12/22/55 72.5*' 376,000° 12/22/64 2000"" 90.5^ |600,000«*| 

1946- USGS 12/22/55 16.20 20,100 12/22/64 - 16.14 19,900 

1939. USGS 12/22/55 42.7*' 173,000 12/22/64 iSOO"" 45.9*' |200,000*«| 



»1910- USGS 12/22/55 61.90 541,000 12/23/64 0200 70.0 f7 50,000**1 
1950- USGS 12/22/55 21.3^ 43,500 12/22/64 - 22.6 | 49,800**| 



USWB 12/22/55 27.7 



12/23/64 0400 29.5 |800, 000**1 



*1911- USGS 12/22/55 29.60 90,400 12/22/64 1145 28.20 >80,000 



99.6 •igil- USGS 12/21/55 21.0 18,900 12/22/64 1100 19.45 18,000 



1941- USGS 12/21/55 15.06 13,300 12/22/64 - 20.26 | 21,000*«| 
1939. USGS 12/22/55 27.00 45,000° 12/22/64 I8OO 26.06 41,200° 



TABLE A-1 (Continued) 



Stream and Station 


Drainage 
Area in 
Sq. Hi. 


Period 

of 
Record 


Source 

of 

Record 

(a) 


Previous Maximum 
of Record 


December 1964 - January I965 


Date 


Stage 
in ft. 


Dischg. 
in cfs 


Date 


Time 


Stage 
in ft. 


Dischg. 
in cfs 



North Coastal Area (Continued) 



Russian River 
near Cloverdale 



Russian River 
near Healdsburg 



502 



793 



Russian River 

near Guemevllle 1,3'*0 



1951- USOS 12/22/55 30.9 

1939- USOS 2/28/40 30.0 

•1939- USGS 12/23/55 t9.7^ 



53,000"- 12/23/64 - 31.6 I S't, 000**1 
67,000 12/23/64 0430 26.62 I 67,100**1 ' 
90,100° 12/23/64 1800 49.6^ 90,000"= 



Central Valley Area 



Cow Creek near 
Millville 



425 



1949- USGS 12/27/51 21.55 45,200 12/22/64 1130 18.4 



30,300 



Cottonwood Creek 
near Cottonwood 



922 



1940- USGS 3/l/'*l 15.'* 



52,300 12/22/64 1400 19.6 



56,000* 



Battle Creek below 
Coleman Pish 
Hatchery near 
Cottonwood 



358 



1961- USGS 12/11/37 15.8*''^ 35,000 12/22/64 1200 12.5 



8,780 



Paynes Creek 
near Red Bluff 



92.7 19'*9- USOS 12/1/61 11.33 10,600 12/22/64 1200 8.7 



4,950 



Sacramento River 
at Red Bluff 



DWR 2/28/40 32.2 



12/22/64 2100 27.7 170,000° 



Mill Creek near 
Los Molinos 



131 



»1909- USGS 12/11/37 23.4'^ 23,000 12/22/64 1200 15.3 13,200 



Thomes Creek at 
Paskenta 



194 1920- USGS 12/21/55 13.89 23,500 12/22/64 1300 15.3 | 33,000**| 
DWR 



Deer Creek 
near Vina 



208 "igii- USGS 12/10/37 19.2^ 

DWR 



23,800 12/22/64 1200 14.7 l8,800 



Big Chico Creek 
near Chico 



72.5 1930- USGS 12/10/37 16.6 



3,260 12/21/64 2300 l4.6 I 8 , 400**1 



Sacramento River 
at Ord Perry 



Sacramento River 
at Colusa 



»1921- DWR 2/28/40 121.7 



ig**©- USGS 2/8/42 69.20 

DWR 



370,000° 12/23/64 1800- 119.0 
2100 



49,000° 1/7/65 0800- 67.0 
1600 



173,000'' 



42,800= 



Butte Creek 
near Chico 



147 1930- USGS 12/22/55 13.35 18,700° 12/22/64 l400 14.1 | 21,300**| 



North Fork Peat her 
River at Pulga 
(formerly Big Bar) 



1,953 •1910- USGS 12/23/55 35.60 72,400°'® 12/22/64 1300 35-2 71,800' 



c,e 



Middle Fork 
Feather River 
near Merrlmac 



1,068 1951- USOS 2/1/63 21.65 65,400 No record - station destroyed 



A-3 



TABLE A-1 (Continued) 



Stream and Station 


Drainage 
Area in 
Sq. Ml. 


Period 

of 
Record 


Source 

of 

Record 

(a) 


Previous Maximum 
of Record 


December 1964 - January 1965 


Date 


Stage 
in ft. 


Dlschg. 
In cfs 


Date 


Time 


Stage 
In ft. 


uisohg. 
in cfs 



Central Valley Area (Continued) 



Feather River at 
Oroville above 
Pish Barrier Dam 



3,632 



1901- USGS 3/19/07 39.3 
DWR 



230,000° 12/23/64 1200 25.3 157,000°''' 



Feather River 
near Grldley 



•1929- DWR 12/23/55 102.25 



12/23/64 0800 100.4 153,000<='*'- 



Yuba River at 
Englebright Dam 



1,104 1941- USGS 2/1/63 544.84 150,000°''^ 12/22/64 2200 546.0 |166,000««) 



,c,< 



Deer Creek near 
Smartvllle 



84.6 



1935- USGS 10/13/62 13.77 11,600° 12/22/64 15OO 11. 85 8,260° 



Feather River 
at Yuba City 



1944- DWR 12/24/55 82.42 



12/23/64 1200 76.4 



Feather River 
at Nlcolaus 



5,928 



1943- USGS 12/23/55 51.60 357,000° 12/23/64 1500 51. 6 283,000°''' 

DWR 



Sacramento River 
at Verona 



1929- USGS 3/1/40 41.20 
DWR 



79,200° 12/25/64 060O 39.7 75,000' 



,c,h 



Middle Fork 
American River 
near Auburn 



American River 
at Sacramento 



612 1911- USGS 2/1/63 43.1^ 



1,900S 1925- DWR 11/21/50 45.73 



4",k 



121,000 12/23/64 1340 |60.4« 

176,000° 12/24/64 1100 41.89 115,000° 



Sacramento River 
at Sacramento 



*1879- USGS 11/21/50 30.14° 
DWR 



104,000° 12/24/64- 1900- 29.4 99,600° 
12/25/64 1400 



Cache Creek at 
Rumsey Bridge 



1957- DWR 2/24/58 18.4 



1/5/65 1800 16 . f. 



37,800 



Yolo Bypass 
near Lisbon 



1914- DWR 12/24/55 23.4 304,800 12/25/64 0700 25. 1 1.345,000**1 



Sacramento River 
near Rio Vista 



Cosumnes River 
at Michigan Bar 



537 



1906- USCE 12/25/55 10.2 



1907- USGS 12/23/55 14.59 
DWR 



12/26/64 1000 9.5 
12/27/64 HOO 



42,000° 12/23/64 0800 13.8 37,500 



Mokelumne River 
near Thornton 
(Benson's Perry) 



Mormon Slough 
at Bellota 



1959- DWR 2/10/60 8.7 



12/24/64 0900 |15.5**I 
1948- DWR 4/2/58 20.65 15,400° 12/24/64 05OO 8.56 3,000'= 



Stanislaus River 
at Orange Blossom 
Bridge 



1940- DWR 11/21/50 30.05 52,000= 12/24/64 1700 26.4 39,800° 



Stanislaus River 
at Ripon 



1940- USGS 12/24/55 63.25 62,500 12/25/64 060O 62.26 32,800° 
DWR 



A-4 



TABLE A-1 (Continued) 



Stream and Station 


Drainage 
Area in 
Sq. Ml. 


Period 

of 
Record 


Source 

of 

Record 

(a) 


Previous Maximum 
of Record 


December ige^t - January 1965 


Date 


Stage 

in ft. 


Dlschg. 
in cfs 


Date 


Time 


Stage 
in ft. 


Dlschg. 
in cfs 



Central Valley Area (Continued) 



Tuolumne River 
at Modesto 



*1878- USGS 12/9/50 69.19 
DWR 



57,000° 1/7/65 1700- 55.3 11,500° 
2200 



Merced River 
near Stevlnson 



1,274 1940- USGS 12/5/50 74.79 
USSR 
DWR 



13,600° 1/8/65 1800 72.08 10,600° 



Bear Creek at 
McKee Road 



USCE 12/- /55 23.0 



9,500 1/7/65 0600 15.2 5,600 



Chowchilla River 
at Buchanan Dam 
Site, near 
Raymond 



238 



»1921- USGS 12/23/55 16.50^ 
DWR 



30,000 12/23/64 1100 533.1 



6,250 



Fresno River 
near Knowles 



132 



»1911- USGS 12/23/55 11.52 13,300 12/23/64 1100 5.5 



2,900 



San Joaquin 
River at Fremont 
Ford Bridge 



8,090 193T- USGS 4/6/58 71.14° 

USER 
DWR 



5,910° 1/10/65 0600 64.53 2,650-' 



San Joaquin 
River near 
Nevmian 



9,990 



1912- USGS 3/7/38 65.81 33,000° 1/10/65 0700 62.67 11,500° 
DWR 



San Joaquin River 
at Crows Landing 
Bridge 



1941- DWR 4/7/58 61.9" 



1/10/65 2000 54.0 11,250 



San Joaquin River 
at Patterson 
Bridge 



San Joaquin River 
at Grayson 



1938- DWR 6/13/38 54.0^ - 1/11/65 0800 47.00 10,750° 
1928- DWR 3/8/41 45.15 23,900 1/11/65 2345 39.23 8,500° 



San Joaquin River 
near Vemalis 



San Joaquin River 
at Mossdale Bridge 



14,010 



»1922- USGS 12/9/50 32.81 79,000 1/12/65 O5OO- 28.2 21,200° 

2400 



1920- DWR 12/10/50 24.4 



1/12/65 1700 13-92 



LEGEND 

(a) USGS 
USER 

usim 

USCE 
DWR 
PG&E 
b 



United States Geological Survey 

United States Bureau of Reclamation 

United States '.feather Bureau 

United States Corps of Engineers 

California State Department of Water Resources 

Pacific Gas and Electric Company 

Site and datum then in use 

Affected by storage and/or diversion 

Includes flow through powerhouse 

Includes flov; bypassing station 

From flood marks 

Estimated 

Affected by partially completed Oroville Dam 

Does not include flov/ that bypasses station 

Peak of flood wave resulting from failure of Hell Hole Dam on the Rubicon River 

Approximate time 

Incomplete record 

r-Iaximum of record 



A-5 





















7 


8 t 


9 


10 


11 


12 


1 13 


1 llv 


91^.1 


1,881.1 


1,985.8 


1,989.6 


1,993.9 


1,999.6 


2,00lv.2 


2,008.6 


92.2 


86.3 


79.6 


72.3 


68.6 


6IV.9 


61.1 


57.1 


30U.0 


3,280.7 


3,238.1^ 


3,197.6 


3,19^.0 


3,l9i^.lv 


3,200.9 


3,203.2 


2li|.3 

; ki.k 

1 


213.3 


210.9 


207.8 


20lv.U 


203.7 


203.2 


202.5 


30.9 


23.9 


23.6 


22.2 


21.3 


21.2 


21.9 


bs.s 


637.5 


605.5 


577.lv 


571^.3 


571^.3 


576.2 


577.8 


686.1 


1,681^.1 


1,678.2 


1,671.8 


1,665.5 


1,660.2 


l,65lv.9 


1,650.6 


266.1 

1 


261.3 


251^.7 


252.0 


251.2 


255.7 


258.lv 


256.lv 


108.3 


109.6 


110.8 


111.9 


113.3 


llU.l 


lllv.T 


115.5 


^65.9 


266.2 


266.8 


267.1 


267.1 


267.3 


267.5 


267.5 


167.8 


183.7 


182.0 


176.7 


168.9 


160.7 


151.9 


llv3.7 


56. U 


56.1+ 


56.3 


56.2 


56.1 


56.1 


56.0 


52.1 


78.7 


7i+.5 


78.1+ 


78. u 


78.lv 


78.lv 


78.lv 


78.lv 


lOU.O 


99.9 


97.3 


96.3 


95.7 


95.3 


95.0 


91^.7 


69.3 


62.8 


59.1 


57.2 


53.3 


52.lv 


51.3 


51.1 


li+5.5 


159.0 


162.8 


161.8 


160.8 


159.9 


159.8 


160.6 


79.9 


81.0 


81.1 


81.1 


80.9 


80.7 


80.6 


79. 1^ 


199.7 


203.5 


203.9 


203.5 


199.0 


197.5 


195.1^ 


193. i^ 


231^.5 


237.1 


239.5 


21+1.1+ 


2I16.7 


2lv9.8 


252.9 


256.0 
















A ■ 



APPEMDIX A 
TABLE A-2 
RESERVOIR OPERATIC BS 

DURING PERIOD DECMBER 1961* AMD JA^mABY 1965 

( Pre lijai nary Data, Gubject to Revision) 



Watershed 


Reservoir 


Crest 

Elevation 

feet 


Capacity in 
1000' s of 
Ac re - Fe e t 


20 1 


21 


22 


23 


2lt 


25 


26 


27 


28 1 


29 


30 


Water in 3 
1 31 


torage. Thousands of Acre-Feet 
1 1 J ? 1 1 1 


4 


5 


6 


7 1 


A 1 


Q 




1 Tt ' 


T^ 


1 r;; 1 




Trinity 


Trinity 


^,395 


2,500.0 


l,li89.0 


1,1(91.7 


1,535-7 


1,687.1 


1,773-7 


1,827. ll 


1,859.6 


1,885.5 


1,902.1. 


1,916.2 


1,925.6 


1,933-4 


1,939-3 


1,943-8 


-^ L 

1,949-8 


1,953-9 


J 2 1 

1,957-4 


2 

1,965-4 


. , ,f 1 
1,974.7 


1 
1,881.1 


2 1 

1,985.8 


10 

1,989-6 


11 
1,993.9 


12 
1,999.6 


J_ 12 

2,004.2 


14 
2,008.6 


E, F. Russian 


Mendocino 


78U 


132.5 


1.5.2 


75.8 


91.8 


121.0 


128.7 


126.0 


120.1. 


119-5 


III..3 


106.7 


96.6 


87.6 


79-3 


■('5-2 


74.4 


75-3 


76.0 


89-1 


92.2 


86.3 


79.6 


72-3 


68.6 


64.9 


61.1 


57.1 


Sacramento 


Shasta 


i,ot8 


It, 500.0 


2,527.0 


2,576. It 


2,733-9 


3,052.9 


3, 201.. 7 


3,276.6 


3,305.0 


3,319-5 


3,310.1 


3,286.2 


3,278.3 


3,262.4 


3,254.7 


3,257.1 


3,261.4 


3,253-3 


3,244.9 


3,285.0 


3,304.0 


3,280.7 


3,238.4 


3,197-6 


3,194.0 


3,194.4 


3,200.9 


3,203.2 


Clear CreeX 


WhlskeytowT) 


1,210 


2I4I.O 


208.8 


209.5 


221.6 


21.2.1. 


21.5.2 


21*3.9 


21.1.9 


2lt0.6 


238.6 


236.0 


232.8 


229.2 


225-2 


221.1 


217.6 


213-6 


209.8 


213.3 


214.3 


213.3 


210.9 


207,8 


204.4 


203.7 


203.2 


202-5 


Stony Creek 


Black Butte 


515 


16C.O 


29.0 


29.8 


37.4 


71.. 


96.5 


gii-g 


79.5 


55.5 


31..6 


22.5 


25.1 


23.7 


22-9 


21-5 


20.2 


21-3 


22.9 


42.1 


41.4 


30.9 


23.9 


23.6 


22.2 


21.3 


21.2 


21.9 


American 


Folsom 


)i80 


1,000.0 


577.0 


596.5 


650.1 


838.3 


888.2 


861.5 


733.0 


688.lt 


673.4 


642.9 


643.0 


636.4 


629-4 


623-9 


621.1 


625-7 


632-9 


612.3 


633.8 


637.5 


605.5 


577.4 


574.3 


574.3 


576.2 


57T.8 


Putah Creek 


Berryessa 


1.56 


1,600.0 


1,355 


1,358.1. 


1.393-2 


1,1.78.9 


l,5n.2 


1,519-8 


1,523.1. 


1,5311. It 


1,51.1.. 3 


1,551.3 


1,558.2 


1,563.9 


1,567.7 


1,571-2 


1,577.9 


1,596-5 


1,619.7 


1,678.6 


1,686.1 


1,684.1 


1,678.2 


1,671.8 


1,665.5 


1,660.2 


1,654.9 


1,650.6 


Merced 


Lake McClure 


710 


289.0 


n.e 


160 


17.6 


38.6 


101.8 


153-1. 


169.2 


185.0 


197.7 


206.8 


213.3 


220.9 


228.2 


232-9 


237-6 


241.4 


247.8 


256.9 


266.1 


261.3 


254,7 


252.0 


251.2 


255.7 


258.4 


256.4 


TuolLinme 


Cherry Valley 


"^,715 


2a.o 


10.5 


11.5 


14.5 


36.7 


60.0 


70.3 


80.7 


85.8 


89.4 


92.5 


94.9 


97.2 


98.9 


100.4 


103-7 


103-7 


104.8 


106.4 


108.3 


109.6 


110.8 


111.9 


113-3 


114.1 


114.7 


115.5 




Hetch-Hetchy 


3,812 


360.0 


138.2 


137.6 


138.5 


17'*.7 


212.7 


238.3 


21.6.6 


252.3 


256.1 


257.3 


258.9 


260.3 


261.0 


261.7 


262.4 


262.9 


263.4 


264.1 


265,9 


266-2 


266.8 


267.1 


267-1 


267.3 


267.5 


267.5 




Dan Pedro 


609 


289.0 


87.li 


87.1. 


87. 8 


llil..2 


lltl..3 


190.6 


196.1. 


196.1 


204.5 


204.3 


199.1 


193-5 


180.6 


172.5 


165.2 


165.2 


158.3 


152.3 


167.8 


183-7 


182.0 


176.7 


168.9 


160.7 


151.9 


143.7 


Stanislaus 


Donnell ' s 


1^,921 


61t.5 


- 


26.7 


27.0 


I1O.7 


58.3 


57.7 


57.5 


57.3 


57.1 


57.0 


57.0 


56-9 


56.7 


56.6 


56.5 


56.4 


56.3 


56.4 


56.4 


56.4 


56.3 


56.2 


56.1 


56.1 


56.0 


52.1 




Beardsley 


3,1*05 


97.5 


- 


36.9 


37.0 


1.1.. 7 


53.9 


69.0 


75-9 


97.6 


97.2 


78.9 


78.8 


78.6 


78.5 


78.4 


78-3 


78.4 


78.4 


78.4 


78.7 


74.5 


78.4 


78.4 


78.4 


78.4 


78.4 


78.4 




Me lone s 


723 


112.5 


- 


1.2.1. 


1.6.1. 


87.2 


113.2 


10I..9 


99-9 


101.3 


100.1 


98.2 


97.2 


96.7 


96.0 


95-0 


94.5 


94.7 


94.7 


96.7 


104.0 


99.9 


97.3 


96.3 


95.7 


95.3 


95.0 


94.7 




Tulloch 


515 


68.1* 


" 


53-9 


51.. 2 


59.1 


69.5 


6U.lt 


70.0 


67.8 


67.6 


64.6 


63.6 


63.9 


63.2 


63.2 


60.9 


62.3 


65-5 


68.5 


69-3 


62.8 


59.1 


57-2 


53-3 


52.4 


51.3 


51-1 


Calaveras 


New Hogan 


725 


325.0 


16.8 


19.1. 


22.3 


31.8 


56.3 


73-7 


77.8 


82.7 


92.1 


97.9 


102.7 


107.0 


111.6 


114.2 


115.9 


118.2 


121-5 


124.6 


145-5 


159-0 


162.8 


161-8 


160.8 


159.9 


159.8 


160.6 


Hokelumne 


Salt Springs 


3.960 


139. It 


- 


6.3 


5.2 


6.0 


31.7 


51.. 2 


6U.5 


69.9 


73-6 


76.6 


78.4 


79.9 


81.8 


81.8 


77.3 


77.3 


76-9 


78.8 


79-9 


81.0 


81.1 


81.1 


80.9 


80.7 


80.6 


79.4 




Pardee 


575 


210.0 


- 


201.8 


203.6 


219.5 


219.5 


213-9 


211.9 


212.3 


211.2 


209.3 


206.4 


202.9 


197.6 


192.4 


189.9 


189-2 


189-7 


189. 8 


199-7 


203.5 


203.9 


203-5 


199.0 


197.5 


195.4 


193.4 




Camanche 


235.5 


lt31.5 


- 


55.6 


61.5 


69.8 


121*. 2 


168.9 


in. 3 


189.0 


200.6 


210.5 


214.3 


221.5 


225.7 


229-3 


239.8 


230-4 


229-0 


232.5 


234-5 


237.1 


239.5 


241.4 


246.7 


249.8 


252.9 


256.0 



PLATE I 




Z^ 


(r 


(0 


iij 


en 


\- 




<t 


•» 


Q. 


OJ 




CO 


q: 




iij 


q: 


X 


UJ 


1- 


m 


< 




UJ 


^ 


$ 


UJ 




o 


u_ 


ill 


O 


o 


? 




< 


(/) 


cc 


QC 


o 


< 


< 


CD 


^w 


^— 


Q 


_l 




_l 


O 


— 


— 


? 


1- 




< 


O 


Sr 


o 


u 


lO 


X 




o 


»- 


(/) 


< 



PLATE I 




PLATE 2 



OSTROPHIC WIND SCALE 




4.0 6.0 8.0 10.0 12.0 

lESSURE DIFFERENCE BETWEEN 
FRANCISCO AND ARCATA- MILLIBARS 



14.0 



NOTE S 

the direction from which the wind was blowing: 
b pressure is at at elevation of about 5,000 feet. 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

METEOROLOGICAL DATA 
-SSURE GRADIENT AND WIND 
DECEMBER 19-26, 1964 



PLATE 2 




DECEMBER 1964 




PLATE 3 



AIR TEMPERATURE AT SEXTON SUMMIT 
ELEVATION 3841 FEET 



850 mb TEMPERATURE AT MEDFORD 
(ABOUT 5000 FEET) 



AIR TEMPERATURE AT BLUE CANYON 
ELEVATION 5280 FEET 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

METEOROLOGICAL DATA 

TEMPERATURE 
DECEMBER 19-27, 1964 



850 mb TEMPERATURE AT MEDFORD 
(ABOUT 5000 FEET) 




PLATE 3 



AIR TEMPERATURE AT SEXTON SUMMIT 
ELEVATION 3841 FEET 



AIR TEMPERATURE AT BLUE CANYON 
ELEVATION 5280 FEET 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

METEOROLOGICAL DATA 

TEMPERATURE 
DECEMBER 19-27. 1964 



DECEMBER 1964 

























PLATE 4 








































































































































































































































































































^^ 


.. 


. 


- 


— - 


_lt 


\C 


"^ 


















































































































29 


30 


3. 1 


STATE OF CALIFORNIA 

THE RESOURCES AGENCY 
lEPARTMENT OF WATER RESOURCES 
DIVISION OF OPERATIONS 

FLOOD OF 
ECEMBER 1964-JANUARY 1965 

.ATIVE PRECIPITATION CURVES 
NORTH COASTAL AREA 
ECEMBER 18-31, 1964 





































— 










- . . 
























































































' 


PLATE 


4 













































1 




REDWOOD 


CREEK - O'KANE- 


7 















































































































/ 


-^ 












































































































/ 


'^ 


^ 
































































































y 
/ 


y 










> 














































































1 1 1 1 
Mil 1 IT': HnwAon 






/" 


" 


y 




^ 


y" 


.x* 




titn 


Uec 




















































CAL.DIV. 

1 


OF 1 


<^0R 


esrffr^ 














































/ 
/ 






/ 


/ 








































































































/ 














































































































/ 


/ 


f 
























































^ 





.- 


- 


-- 


16.8" 






































1 
1 


^ 


/ 
































._ 


__ 


-' 


■" 


-■ 


-- 


• " 


' 


























































1 


/ 










y' 


* 


_i 


iKh_ 


1/y 


-- 


■- 


— - 


-- 


- 


^ #^ 














































































y 
/ 


1 






/ 






































































































. 


// 
/ / 




/ 








































































































1 


1 

/ 
J 


1 


J 

1 

t 






































27 


28 


29 


30 


-^ 3' 1 


STATE OF CALIFORNIA 
THE RESOURCES AGENCY 
































/ 




































































1 


/ 










































DEPARTMENT OF WATER RESOURCES 




























/ 


<* 










































DIVISION OF OPERATIONS 

FLOOD OF 




























/ 


-&^ 
























































t_ 


stii 


note 


cf 






y 

* 




f 












































DECEMBER 1964-JANUARY 1965 

ACCUMULATIVE PRECIPITATION CURVES 
























^ 






















































■-• •* 


y_ 


'- 


- 


" ' 


" 




















































NORTH COASTAL AREA 
DPCEMBER 18-31. 1964 


18 


19 


20 


21 


22 


23 


24 


25 


26 






















___^ 


















1 



DECEMBER 1964 























PLATE 


5 












_^, 


^' 






--■ 




37.4"\ 








,^ 


^' 


-"' 




































































29 


.0" 


_r " 


— - 









- - 




- - 


— 


— 


/ 
26 






































































































































































































































































1 29 1 30 




ix 1 


STATE OF CALIFORNIA 
THE RESOURCES AGENCY 
kRTMENT OF WATER RESOURCES 
DIVISION OF OPERATIONS 

FLOOD OF 
:MBER 1964-JANUARY 1965 

TIVE PRECIPITATION CURVES 
UBA-AMERICAN RIVER BASINS 
EMBER 18-31, 1964 







































































































































PLATE 


5 









































































' — 


1 — 
















^ 


- 


- 






- 


-- 









37.4" 






































1 — 






























^ 


> 


^ 


^ 






^ 






























29.8" 




















































BLUE 


CANYON 


^ 
















^^ 












r • 




-- 




-- 


- — 






-- 




1 28.0" 
















































J 


r 






















7 


"■ 


m /- 
































.- 
















































/ 




/ 


BRUSH CREEK 


^ 


.- 


m^' 


f^ 


/ 


t 




















































































f 


r 
-- 


-- 


/ 


CA 

> 


MP, 


'■ON 

mm ^ 


'/IL, 


.£■ 


^ 


^ 


^ 






















































































/ 

/ 


/ 


f 






/ 




































































































i 

/ 
/ 


/ 


f 


1 








































































































i 

/* 


/ 

7 


1 

/ 


1 










































































































/ 


/ 


f 








































































































/ 




1 


/ 






1 




































































































/ 


/ 


/ 

1 










































































































/ 


/ 


/ 

\ 


/ 
















































































27 


f 


29 


30 


-■3. 1 
























/ 




y 


/ 












































STATE OF CALIFORNIA 

THE RESOURCES AGENCY 






















y 




/ 




/ 




























































/ 


/ 




/ 


/ 


/ 












































DEPARTMENT OF WATER RESOURCES 
DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

ACCUMULATIVE PRECIPITATION CURVES 

FEATHER-YUBA-AMERICAN RIVER BASINS 

nrrFMRFR lfl-31. 1964 














^/ 


^ 


r 




F-" 


y 


> 
























































y 




^ 


- 


- 


r' 






















































18 


19 


20 


21 


22 


23 


24 


25 


26 









































_J 



DECEMBER 1964 























PLATE 6 


























•A- 10.5" 
LE 6.6" 










































1 




































































































1 _f^ 












Bf 


WS 


H C 


REL 


^~~ 










v^ 




















/ 


^ 


^^^ 


^ 


— . 


— - 


CA 


\MP 


TOt 


'V/L 


.y 








































L n . . . 




















6 


7 1 


8 


JANUARY 1965 

STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

LATIVE PRECIPITATION C 

ATHER-YUBA RIVER BASIN 

JANUARY 4-7, J965 


URVES 
S 



PLATE 6 









<o 12 

UJ 
T 
O 

z 
~I0 

z 

z 

< 

a. 
(J 6 

lU 
K 

0. 

>^ 

1- 
< 
-1 

o 
o 

< 










































■K 10.5" 
LE 6.6" 














































































































































































































































































































^ 












5/ 


WS 


H CREt 


























/ 


^ 


/ 


/^ 






























,^ 


/ 


/ 






/ 




~w 


^ 


^^ ■ 


— - 


CA 


\MP 


T0/\ 


'VIL 








r 


/^ 






> 


• — 


y 


y 
























j 


4 

/ 


-- 


y 


/' 






























J 




f 


































4 


5 


6 


7 


8 




JANUARY 1965 

STATE OF CALIFORNIA 
THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

ACCUMULATIVE PRECIPITATION C 
FEATHER-YUBA RIVER BASIN 
JANUARY 4-7, 1965 


URVES 
S 



i 



PLATE 7 




-/0-~ 



LEGEND 

ISOMYETS OF RAINFALL IN INCHES 

RESERVOIR 

NATURAL LAKE 

DRAINAGE BASIN BOUNDARY 



+5 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964 - JANUARY 1965 

ISOHYETAL MAP 
NORTH COASTAL AREA 

DECEMBER 18-27 1964 (9 DAYS) 

SCALE OF MILES 
16 



1 

/ 




<^s- 



LEGEND 

ISOHYETS OF RAINFALL IN INCHES 

RESERVOIR 

NATURAL LAKE 

DRAINAGE 8ASIN BOUNDARY 



+5 



STATE OF C*L(PORNI* 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964 -JANUARY 1965 

ISOHYETAL MAP 
NORTH COASTAL AREA 

24 HOUR PERIOD ENDING 
0800 PST DECEMBER 22 1964 

SCALE OF MILES 



LEGEND 

ISOn-TETS OF fiAINFALL IN INCHES 

RESERVOIR 

NATURAL LAKE 

DRAINAGE 8ASIN BOUNDARY 




SAN FRANCISCO SAY 



THE RESOunCES AGENCr 
DEPARTMENT OF WATER RESOURCES 

DIVISION OF QPESATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

ISOHYETAL MAP 
CENTRAL VALLEY AREA 

DECEMBER 18-27 1964 (9 DAYS) 

SCai-E OF MILES 



LEGEND 

ISOHTETS OF nAIMFALI. IN INCHES 

RESERVOIR 

NATURAL LAKE 

DRAINAGE QA5IN 80 UN DA RV 




SAN FRANCISCO BAY 



The resources agenc* 
department of water resources 

division of operations 

FLOOD OF 

DECEMBER 1964 -JANUARY 1965 

ISOHYETAL MAP 
CENTRAL VALLEY AREA 

JANUARY 2-7 1965 (5 DAYS) 

SCALE OF MILES 



PLATE II 











































































14 























































































































14 





SMITH RIVER NEAR CRESCENT CITY 



PERIOD OF RECORD: 1931 - PRESENT 



DATE FLOW IN C F S 
12,2Z'6J 192,000 

12/22'5S 165,000 

10'29/SO 152,000 

1173,53 141,000 



REDWOOD CREEK AT CRICK 

PERIOD OF RECORD: 1910 - 15, 1916 - PRESENT 



DATE FLOW IN C F S. 
1 IB S3 50,000 

12 22 55 50,000 

12 22 64 50,000 



REDWOOD CREEK NEAR BLUE LAKE 

PERIOD OF RECORD: 1953 - 58, 1964 - PRESENT 



DATE FLOW IN C F.S. 

12/22-64 15, 100 

12 21/55 12,100 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPHS OF 
SMITH RIVER AND REDWOOD CREEK 































































































































































































































































































1 














































































































































































































1 




































































































































































































































































































































































































































































































































































































































































































































































































1 


\ 








































































































































































?00 
























r 


/Si'.O 


30 


n 


AT 




VO 





























































































































































































A 


























































































































































































ifin 






















' 


























































1 
















































































































































^ 


J 


1 






_, 


~j 


■/vo ' 


EC 


OR 


„ 




'■E 


< . 


n 


Gt 


7- 


























































































































































\?o 
















^ 








r 


> 










































































































































































100 














1 










\ 
























































































































































































ftO 












/ 


V 










\ 




































































































































































































/ 






































































































































































































1 






> 
















\ 






















































































































































































?n 


> 


> 


f 


















V 


s 
















t 






^ 


























































































































































T' 


























^ 








y 






















































































































[ 













































' 




i , . 
























1 








20 


21 


22 


23 


2. 


26 


26 


27 




29 


30 


31 


' 


2 


3 


" 


5 


6 


7 


8 


9 


10 


II 


12 


13 


,4 1 




DECEMBER 1964 


JANUARY 1965 | 



SMITH RIVER NEAR CRESCENT CITY 



PERIOD OF RECORD 1M1 - PRESEMI 



DATE 
10 TDIVi 



FLOWIMCFi 

vn.tm 

1«5,000 





r 


-^ 






































































r 


















- 














" 






' 


"^ 






^ 












" 








" 










































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































i 




St 





00 


c 


f S 




T c 


ot 



























































































































































































/ 




\ 


















































































































n 






















































































/ 








\ 
\ 






































































































































































































1 








I 
1 


*^ 


u- 


s 
a 


YN 



RE 


■6 


ED 
ID 
























































































































































































1 










\ 














































































































































































































\ 


* 




— 


N 


s 




















































































































































































/ 


> 






























N 












































































































































































^ 








i 


^ts.ao 


3 C 


F5 AT 


^^ 


70 ' 










^. 


., 


■*. 


































































































































































/ 




^ 


1^ 


\ 




^^1 
























>7i 


CK 


ac 





CI 


EEK AT Of 


ICK 






























































































































> 


/ 






/ 








s 




y 




"s, 


s. 




/■ 


»«» 


•«», 


^ 


>.^ 










* 





tot 


Cf~ 


i i 

EEK NEAR 


1 
BLUE 


^ 


tir 


























































































































*• 


y 


r, 




^ 


J 










































M 




1 




1 




























































































































20 


2< 1 


22 


23 


24 


25 


26 


27 


26 


29 


30 


31 


' 1 ' 


2 


3 


4 


— 


5 


s 


' 


« 


9 


,0 


" 


,2 


" 


,4 1 


DECEMBER 1964 


JANUARY 1965 1 



REDWOOD CREEK AT ORICK 

PERIOD OF RECORD 1510 - IS. 1?16 - PHESENI 



DATE 
1'18/S3 

urn 'Si 



FLOW IN C F S 

so.ooo 

50,000 



REOWOOO CREEK NEAR BLUE LAKE 

PERIOD OF flECOHO IMS - ifl. I'M -. PRESENl 



FLOW IMCF.S 
11,100 
11.100 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPHS OF 
SMITH RIVER AND REDWOOD CREEK 



MAD RIVER NEAR ARCATA 

PERIOD OF RECORD 1910-13, 1950-PRESENT 



DATE 
12 '22-55 
I2'23M 



FLOW INC F.S 
77,800 
71,000 



PLATE 12 















































































































14 





TRINITY RIVER NEAR HOOPA 



PERIOD OF RECORD: 191t-M. 1916-18, 193UPRESENT 



DATE 

12/32/5S 
J/19/S8 
2/28/40 



FLOW IN C.FS- 
260,000 
190.000 
125,000 
124,000 



STATE OF CAklFOItNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPHS OF 
MAD AND TRINITY RIVERS 







































































































































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DECEMBER 1964 


JANUARY 


965 1 



MAD RIVER NEAR ARCATA 

PERIOD OF RECOBO 1910-13. 19M-P9ESEHt 



DATE 
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DECEMSER 1964 


JANUARY 1965 1 



TRINITY RIVER NEAR HOOPA 

PERIODOF RECORD WM-U, 1916-lB, IHl-PHESENT 



0*TE 
}3/n/5S 



n.Oil in C. F s. 
IW.OOO 
190.000 
125,000 

134.000 



STATE OF CALIFOKNIA 

the resources agency 

departme:nt of water resources 

division of operations 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPHS OF 
MAD AND TRINITY RIVERS 



PLATE 13 






EEL RIVER AT ALDER POINT 



PERIOD OF RECORD: 19S5-PRESENT 



DATE FLOWINCFS. 
12. 22 64 600,000 

12 22 55 376,000 

2, 8.60 220,000 



EEL RIVER AT SCOTIA 



PERIOD OF RECORD; 1910-15, 19I6-PRESENT 



DATE FLOW IN C F.S. 
12 22. 64 750,000 

12.2Z'55 541.000 

12. 11 37 345,000 

2/8.60 343,000 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPHS OF EEL RIVER 



















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I- 1 


DECEMBER 1964 


JANUARY 1965 | 



EEL RIVER AT ALDER POINT 



PERtOOOF ReCOHO I95S-PBESENT 



FLO* IN C.F.S 
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376,000 
220.000 

























































































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DECEMBER 1964 


JANUARYI96% 1 



EEL RIVER AT SCOTIA 



EHIOOOF RECORD 


1910- 


5, 19,6 


PRESD4T 




DATE 

11/11/37 
2/B/w 








FLO" IN C F S 
750.000 
M 1.000 
345,000 
W3.000 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPHS OF EEL RIVER 



PLATE 14 



LAKE MENDOCINO (COYOTE DAM) 

GROSS POOL 122,500 ACRE-FEET COMPLETED 1959 
PERIOD OF RECORD: 1959-PRESENT 



DATE INFLOW IN C F S 
12 22 M 21,000 

2 8 60 10.200 

1 31 63 8,800 



RUSSIAN RIVER NEAR HOPLAND 



PERIOD OF RECORD: 1939-PRESENT 

DATE FLOWINCFS 

12 22 55 d5,000 

12 22 64 41,200 

2'28, 40 34, 100 



STATE OF CALIFOKMA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OR OI>£RATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OPERATION OF 

LAKE MENDOCINO RESERVOIR AND 

HYDROGRAPH OF RUSSIAN RIVER 



PLATE 14 



I- e 
^ o« - 



t 1 1 I 1 1 1 1 1 1 1 T II 1 1 1 1 1 1 

^ ^l.ooo crs nr i*oo 1 1 1 I 1 ' 

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- 1 


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^/Tu^ ^' ^.4i. 


20 21 22 23 24 25 26 27 26 29 30 31 1 2 


3 4 5 6 7 e 9 10 II 12 13 14 


OeCEMBEft 1964 jaNUflRT 1965 | 



LAKE MENDOCINO (COYOTE DAM) 

GTOSSPOOL 112,S(B ACHE. FEET COMPLETED 1959 
PERIOD 01= flECDRD: 19S9-PRESENT 



DATE 


INFLOW IN C F S 


1212/64 


ll.OOO 


2'B'M 




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1- 1 


DECEMBER 1964 


JANUARY 1965 1 



RUSSIAN RIVER NEAR HOPLAND 



PEfilOO Of RECOBO, t939-PRESE"T 

DATE 
I2'2!.'5! 
12 22 U 
2 28 40 



fLOWIKCFS 
45.000 

41.100 
M.1D0 



STATE OF CALIFO»tNfA 

THE RESOUttCEB AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION on OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OPERATION OF 

LAKE MENDOCINO RESERVOIR AND 

HYDROGRAPH OF RUSSIAN RIVER 













































































































































- 


- 


- 


14 





PLATE 16 



OROVILLE DAM EMBANKMENT 

IUnde> Consttuctionl 

Outflow shown is hydrogpoph of Fealher River ot Otov.lle obovo F.sh Bai 

PERIOD OF RECORD: 1902-PRESENT 

DATE FLOWINC.FS, 
12/22 64 250,000* 

12/23/64 157.000" 

3/19/07 230.000 



'Peok .ntlow beh.nd Orov.lle Dam Embonkment 
"Peoh discharge o( Feother River at Oroville above Fish Sorrier Dam 



















































































































































14 





BLACK BUTTE RESERVOIR 

GROSS POOL 160.000 ACRE FEET COMPLETED 1963 
PERIOD OF RECORD 1963-PRESENT 



DATE INFLOW IN C F S 

12 23 64 48,000 



STATE OF CALIFORNIA 

THE RESOURCES ACENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OROVILLE DAM EMBAMKMENT, 

FEATHER RIVER, AND 

OPERATION OF 

BLACK BUTTE RESERVOIR, 

STONY CREEK 



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OECEHBEfl 1964 


JANUARY 


865 1 



SHASTA RESERVOIR 



PERIOD OF RECORD: 1VIS-PRESENT 
IMFLOW TO SHASTA RESERVOIR COMPUTED ilNCE IM5 
REPORTED AS "WCBAUENTO HfVER AT KESWICK" IWJ-W 
■'SACRAMENTO RIVER Al KENNETT" 19J5-« 



(NFLO# IN C F 
lOI.OOO* 
187, 100- 
lai.OOD 























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138.5 





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14 




OECEMSER <964 


JANUARY 1965 





_J 



SACRAMENTO RIVER AT RED BLUFF 

Flow REGULATED 9Y SHASTA RESERVOIR ilNCE t'« 
PERIOD OF RECORD ie78-PflES£MT 
PRIOR 10 OOMSTfiUCIlON OF SHASTA DAW 

DATE FLOW IN C f S 

11/11/37 IB*.OOI) 

SINCE COHSTBUCTION OF SHASTA 0AM 



DATE 
IZZ2 W 
l/S-iS 
2/19/38 



STATE OF CALIFOdNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER t964-JANUARY 1965 

OPERATION OF 

SHASTA RESERVOIR AND 

HYDROGRAPH OF SACRAMENTO RIVER 



PLATE 17 



F- 



























































































































































14 





BUTTE CREEK NEAR CHICO 



PERIOD OF RECORD; 1930-PRESENT 



DATE 
13 22 64 
12 22 55 

1/5/65 



FLOW IN C F,S 
21. »0 
18,700 
17,400 



YUBA RIVER AT SMARTVILLE 



COMPUTED FROM SUMMATION OF "AT ENGLEBRIGHT DAM" AND 
"DEER CREEK NEAR SMARTVILLE" 



PERIOD OF RECORD: 1903-PRESENT 



REPORTED AS "AT SMARTVILLE" (INCLUDES DEER CREEK} 1903-41; 
1941-PRESENT. COMPUTED AS STATED ABOVE 



DATE 
12 22 64 
12 23/55 
2/1/63 



FLOW IN C F.S. 
171,800 
156,500 
155,000 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPHS OF 
BUTTE CREEK AND YUBA RIVER 























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DECEMeER 1964 


JANUARY 1965 | 



OROVILLE DAM EMBANKMENT 

Ovillev iSawn II hr^iafroph at FmiKv Ri>» a> Oinvilla iibci>« Fnh But 
PERIOD OF RECORD 1903-PHESENT 



DATE 
1 19 07 



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OECEM BER 1964 


JANUARY 1965 




_l 



BLACK BUTTE RESERVOIR 

GROSS POOL 160,000 ACHE-FEET COMPLETED l«0} 
PERIOD OF RECORD tSiS-PRESENT 



STATE or CAi.m>«WIA 

THE RESOURCES AGENCV 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OROVILLE DAM EMBAMKMENT, 

FEATHER RIVER, AND 

OPERATION OF 

BLACK BUTTE RESERVOIR, 

STONY CREEK 



PLATE 18 



















































































- 


•• 


- 


- 


























































* 








14 





FOLSOM 



RESERVOIR 



GROSS POOL 1.000,000 ACRE-FEET COMPLETED 1954. FLOW REGULATED BY 
FOLSOM RESERVOIR SINCE 1955. 



PERIOD OF RECORD; 1904-PRESENT 

REPORTED AS "AMERICAN RIVER AT FAIR OAKS" 1904-55 



DATE 
12 23/64 

2/l'63 

ins/ss 

•Peok of figod wove resulting fiom loilure ol "Hel 
•■Recofdi furnished by U S, Bureau of Reclomotion 



INFLOW IN C F.S 
280.000* 
240.200" 
218.000" 

Hole Dom" on the 



FLOW PAST LATITUDE OF SACRAMENTO 



FLOW PAST LATITUDE OF SACRAMENTO RECORD IS OBTAINED BY SUMMATION 
OF THE FOLLOWING: SACRAMENTO RIVER AT SACRAMENTO AND YOLO BYPASS 
NEAR LISBON (PUBLISHED AS "AT LISBON" PRIOR TO 2 19 59) 

PERIOD OF RECORD: 19U-PRESENT 

DATE FLOW IN C-FS. 

12'25 64 445.000 

12/-24,'5S 405.000 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPCRATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OPERATION OF FOLSOM RESERVOIR, 

AMERICAN RIVER, AND HYDROGRAPHS OF 

FLOW PAST LATITUDE OF SACRAMENTO 





















































































































- 














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DECEMSER 1964 


JANUARY I96S | 



BUTTE CREEK NEAR CHICO 



>ERIOD OF BECORE): TOO. PRESENT 



DATE 

12 i: ss 



FLOWINCFS 
21.300 
lB,7Da 

























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DECEMBER 1964 


JANUARY 1965 




J 



YUBA RIVER AT SMARTVILLE 



PERIOD OF BECOHO: I90)-PRESEHT 



DATE 

12.21'SS 
1-I/6J 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPHS OF 
BUTTE CREEK AND YUBA RIVER 



PLATE 



































































































































































14 





COSUMNES RIVER AT MICHIGAN BAR 



PERIOD OF RECORD: 1907-PRESENT 

DATE FLOWINCFS. 

12/23/55 42,000 

2/1/63 39,400 

12/23/64 37.500 



SAN JOAQUIN NR. VERNALIS 



PERIOD OF RECORD: 1922-PRESEnT 

DATE FLOWINCFS. 

12/ 9 '50 79,000* 

3/16/38 51,200" 

12/25/55 50.900 

4/S/5B 41,400 

'Includes (low fhiough levee b'eokt 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVlS(ON OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPHS OF 
COSUMNES AND SAN JOAQUIN RIVERS 



0| o ^ 08 



r-r 1 r 1 1 I 11 r- 


^j;t4Af^vJ^5p-KiS^ 


r'^M 


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ncAwl £24i™j« SOeirKhm' OZInch.*' 








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rm . ir if 


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"""__"■ rl^LjEli J III [Mil 








/ 


\ ' (quE TO FAILUflE OF HELL HOLE DAM 








1 


' '^J 








214,000 crS AT 0800 '^ T ~* A 
9nr, J / I 


_S^ 








Ap 


::::::... 




'-RESERVOIR STORAGE , 
< 111 


.» -.-^ f 








^-■'' ■'"■-^ _|_ 










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/ PEAK RELEASE 115,000 CES. FTiOM 1000 12/23 
1 5" ""^ '^°° 12/25 








Tr 


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JANUARY 1965 | 







































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JANUARri96S 1 



FOLSOM RESERVOIR 



PERIOD OF RECORD^ 1904-PRESEHT 

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FLOW PAST LATITUDE OF SACRAMENTO 



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OF THE FOLLOWING SAOIAMENTO S1VER AT SACRAMENTO AND TOLO BYPASS 
NEAR LISBON (PUBLISHED AS ''AT LISBON" PRIOR TO 2 W B) 

PEftlOO OF RECORD- 19H-PRESD<T 





FLOW IN CF 


12.'1S'M 




1121 U 


iOSOOO 



STATE OF CALirOBNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

OIVIStON OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OPERATION OF FOLSOM RESERVOIR, 
AMERICAN RIVER, AND HYDROGRAPHS OF 
FLOW PAST LATITUDE OF SACRAMENTO 



PLATE 20 







































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PARDEE RESERVOIR 

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PERIOD OF RECORD: 1929-PRESENT 



DATE 
12/3/30 
12/24/M 
12/23/64 
11/20/50 



INFLOW IN C F.S. 
34,000 
32,100 
30,500 
30,000 



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14 


1 



NOTE SEE RESERVOIR RELEASE HYOROGRAPH OF PARDEE RESERVOIR 
SHOWN ABOVE FOR INFLO* TO THIS RESERVOIR 



CAMANCHE RESERVOIR 

GROSS POOL 431,500 ACRE-FEET COMPLETED 1963 
PERIOD OF RECORD: 1963-PRESENT 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

□ IVISICTN OR OPCRATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OPERATION OF PARDEE 
AND CAMANCHE RESERVOIRS, 
MOKELUMNE RIVER 

















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DECEMBER 1964 




JANUARYI96S ■ 



SAN JOAQUIN NR VERNALIS 

PERIOD OF RECORD. lOM-PHESENT 



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FLOOD OF 
DECEMBER 1964-JANUARY 1965 

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PLATE 21 



ivl 



LAKE McCLURE (EXCHEQUER DAM) 

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DATE 
12/23/55 
11/19/50 



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83,000 



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PERIOD OF RECORD; 1940-PRESENT 



DATE 
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FLOW INC F S 
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STATE or CALIFOMNf A 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION Ofi-orCRATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY I960 

OPERATION OF 
LAKE MCCLURE RESERVOIR AND 
HYDROGRAPH OF MERCED RIVER 



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OECEMBCR 1964 


JANUARY 1965 1 



NOTE iEE RESERVOIR RELEASE HYOROSRAPM OF PAflDEE RESERVOIR 
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CAMANCHE RESERVOIR 



GROSS POOL Ol.SOO ACHE-FEET COMPLETED l»3 
PERIOD OF RECORD: 1963-PRESeNT 



STATE OF CALirORNfA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

OIVISieJN OR OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OPERATION OF PARDEE 

AND CAMANCHE RESERVOIRS, 

MOKELUMNE RIVER 



t\ 



PLATE 22 



DON PEDRO RESERVOIR 



GROSS POOL 289,000 ACRE-FEET COMPL ETED 1922 
PERIOD OF RECORD: 1922-PRESENT 



DATE 
12/22 55 

11/19/50 



INFLOW IN CFS. 
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86,000 



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PERIOD OF RECORD: 1950-PRESENT 



DATE 

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FLOW IN C F S. 
S7,a>0 



STATE OF CALlFOI«NIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

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DECEMBER 1964 


JANUARYI965 | 



LAKE McCLURE (EXCHEQUER 0AM) 



GOOiS POOL IW .000 ACHE FEET CCMPLETEO II 
PERIOD OF RECORD: ina-PRESENT 



DATE 
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DECEMBER 1964 








JANUARY 1965 1 



MERCED RIVER NEAR STEVINSON 
PERIOD OF RECORD IWO-PRESENT 



«TATB OF CALIFOMMA 

THE RtMOUKCtM AOENCY 

OEPARTMENT OF WATEP RESOURCES 

OIVISTON Ofi-O^CRATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY I960 

OPERATION OF 
LAKE MCCLURE RESERVOIR AND 
HYDROGRAPH OF MERCED RIVER 



PLATE 23 







































































































































































1 1 


14 





MELONES RESERVOIR 

GROSS POOL 112,610 ACRE-FEET COMPLETED 1926 
PERIOD OF RECORD: 1926-PRESENT 

DATE INFLOW IN C F S 

12 23 55 100,000 































































































































































14 





TULLOCH RESERVOIR 

GROSS POOL 6B,400 ACREFEET COMPLETED 1957 

PERIOD OF RECORD; 1957-PRESENT 

DATE INFLOW IN C FS, 
\7r2A/64 4 3,300 

2/1/63 21,000 

4/3/58 16,000 



STATB OF CALIFOIttOA 

THE ReSOUHCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OPERATION OF 

MELONES AND TULLOCH RESERVOIRS, 

STANISLAUS RIVER 



PLATE 22 































































































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DECEMBER 1964 


JANUARY I9G5 | 



DON PEDRO RESERVOIR 

CROSS POOL IB'.OOO ACRE-FEET COMPLEreO ITOl 

PERIOD OF RECOHO: IW2-PRESENT 

DATE (NfLOWIUCFS 

12.32'SS 100,000 

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OECEM BER 1964 








JANUARYI96S ■ 



TUOLUMNE RIVER AT MODESTO 



PERIOD OF SECORO 19S0-PRESENT 



STATE OF CALIFOItNtA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

OrVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OPERATION OF 

DON PEDRO RESERVOIR AND 

HYDROGRAPH OF TULOUMNE RIVER 



PLATE 24 



" 






































































. 


























































- 
















14 





STANISLAUS RIVER AT ORANGE BLOSSOM 



PERIOD OF RECORD: 19dO-PRESENT 

DATE FLOW IN C.FS, 

112150 52,000 

























































































































































14 





HOGAN RESERVOIR 
GROSS POOL 76.000 ACRE-FEET COMPLETED 1930 
PERIOD OF RECORD: 1930-1963 



DATE 
12 23 55 



INFLOW INCF S 
31,000 



NEW HOGAN RESERVOIR 



GROSS POOL 325,000 ACRE-FEET COMPLETED 1963 
PERIOD OF RECORD: 1963-PRESENT 



DATE 
12/23/64 



INFLOW IN C F S 
20,600 



STATE OF CALWONMIA 

THE Rrs<xmcc« A«CNcr 

DEPARTMENT OF WATER RESOURCES 
DIVISION OF Of>ERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPH OF 
STANISLAUS RIVER AND 

OPERATION OF 

NEW HOGAN RESERVOIR, 

CALAVERAS RIVER 





































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DECEMBER 1964 


JANUARY 1965 | 



MELONES RESERVOIR 

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14 


— 




DECEMBER 1964 


JANUARY 1965 1 



TULLOCH RESERVOIR 

CROSS POOL 68,J00 ACHE FEET COMPLETED US? 



PERIOD OF RECORD; MS7.PHESENT 



INFLOW INC PS 



STATE OF CALIFOHNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPEHATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

OPERATION OF 

MELONES AND TULLOCH RESERVOIRS, 

STANISLAUS RIVER 



PLATE 25 





















__ 






























— 


- 


- 




















^ ^ 


_ 




























14 





z\ 



SACRAMENTO RIVER AT RED BLUFF 



SACRAMENTO RIVER AT ORD FERRY 



SACRAMENTO RIVER AT COLUSA 



SACRAMENTO RIVER AT SACRAMENTO 



YOLO BYPASS NEAR LISBON 



SACRAMENTO RIVER AT RIO VISTA 

STATE OF CALirOWMIA 

THE RESOURCeS AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF-O^ERATIOMS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

GAGE HEIGHTS OF 
SACRAMENTO RIVER AND YOLO BYPASS 







1 


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DECEMBER 1964 


JANUARY 1965 . | 



STANISLAUS RIVER AT ORANGE BLOSSOM 



PERIOD OF HECOHO IMO-PSESEMT 

























































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FLOOD OF 
DECEMBER 1964-JANUARY 1965 

HYDROGRAPH OF 
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CALAVERAS RIVER 



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14 





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STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

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JANUARYOeS 1 



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PLATE 27 























































































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14 





SAN JOAOUIN RIVER NEAR NEWMAN 



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STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

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DECEMBER 1964 


JANUARY 1966 | 



FEATHER RIVER AT OROVILLE ABOVE FISH BARRIER DAM 



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1 OECEMeER 1964 


JANUARY 1-9 65 1 



FEATHER RIVER AT NICOLAUS 



YUBA RIVER AT ENGLEBRIGHT D*U 



CACHE CREEK AT RUMSEY BRIDGE 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

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FEATHER RIVER, YUBA RIVER, 

AND CACHE CREEK 



PLATE 28 



LEGEND 

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e BOTH RECORDINGS NON - R E COR I NG PRECIPITATION GAGES 

A STREAM GAGING STATION 




STATE OF CALIFORNIA 

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DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

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DECEMBER J964 


JANUARY 1965 | 



SAN JOAQUIN RIVER NEAR NEWMAN 

































































































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DECEMBER 1964 


JANUARY 1965 1 



SAN JOAQUIN RIVER NEAR VERNALIS 



STATE OF CALIFORNIA 

TM£ RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

GAGE HEIGHTS OF 
SAN JOAQUIN RIVER 



/ 



PLATE 29 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

MAJOR DISASTER AREAS 



SCALE OF MILES 
40 80 120 




c o 



LEGEND 
• RECOnOiNG PnECiBIT&TION G4CE 
O NOH-RECOHOINC eREClPIT«IIOH OBGE 

O BOTH «eC0n0lNC B NON-BECOROING PHEC101T4TI0N OaCeS 
A STREAM GACINC STATION 




STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

PRECIPITATION AND STREAM 

GAGING STATIONS 

NORTH COASTAL AREA 



PLATE 29 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 
DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

MAJOR DISAS^TER AREAS 



SCALE OF MILES 
40 Bl 




PLATE 30 



STATE OF CALIFORNIA 

THE RESOURCES AGENCY 

DEPARTMENT OF WATER RESOURCES 

DIVISION OF OPERATIONS 

FLOOD OF 
DECEMBER 1964-JANUARY 1965 

MAJOR DRAINAGE AREAS 

IN 

CALIFORNIA 

LEGEND 

ELEVATION IN FEET 

500 AND UNDER 

500 TO 2500 

2500 TO 5000 

SOOO TO 7500 

7500 TO 10.000 
1^1 10,000 AND OVER 
'"~-' DRAINAGE BOUNDARY 




UNIVERSITY OF CALIFORNIA DAVIS 



3 1175 03194 7990 




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